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1212234044 = 2272331411481
BaseRepresentation
bin100100001000001…
…0011100100111100
310010111000212111012
41020100103210330
54440312442134
6320142214352
742016551020
oct11020234474
93114025435
101212234044
1157230241a
12299b843b8
131641b8b68
14b6dd6380
15716556ce
hex4841393c

1212234044 has 96 divisors (see below), whose sum is σ = 2676989952. Its totient is φ = 468864000.

The previous prime is 1212234043. The next prime is 1212234053. The reversal of 1212234044 is 4404322121.

It is a super-2 number, since 2×12122340442 = 2939022754865187872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212234041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 817784 + ... + 819264.

It is an arithmetic number, because the mean of its divisors is an integer number (27885312).

Almost surely, 21212234044 is an apocalyptic number.

1212234044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212234044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1338494976).

1212234044 is an abundant number, since it is smaller than the sum of its proper divisors (1464755908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212234044 is a wasteful number, since it uses less digits than its factorization.

1212234044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587 (or 1585 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1212234044 is about 34817.1515779221. The cubic root of 1212234044 is about 1066.2576468682.

Adding to 1212234044 its reverse (4404322121), we get a palindrome (5616556165).

The spelling of 1212234044 in words is "one billion, two hundred twelve million, two hundred thirty-four thousand, forty-four".

Divisors: 1 2 4 7 14 23 28 31 41 46 62 82 92 124 161 164 217 287 322 434 574 644 713 868 943 1148 1271 1426 1481 1886 2542 2852 2962 3772 4991 5084 5924 6601 8897 9982 10367 13202 17794 19964 20734 26404 29233 34063 35588 41468 45911 58466 60721 68126 91822 116932 121442 136252 183644 204631 238441 242884 321377 409262 425047 476882 642754 818524 850094 953764 1055953 1285508 1396583 1700188 1882351 2111906 2793166 3764702 4223812 5586332 7391671 7529404 9776081 13176457 14783342 19552162 26352914 29566684 39104324 43294073 52705828 86588146 173176292 303058511 606117022 1212234044