Search a number
-
+
1230212232 = 23338876421
BaseRepresentation
bin100100101010011…
…1000110010001000
310011201212020221000
41021110320302020
510004413242412
6322023415000
742325426404
oct11124706210
93151766830
101230212232
11581471727
122a3bb4460
13167b41c42
14b9556104
15730074dc
hex49538c88

1230212232 has 64 divisors (see below), whose sum is σ = 3421641600. Its totient is φ = 409544640.

The previous prime is 1230212231. The next prime is 1230212233. The reversal of 1230212232 is 2322120321.

It is an interprime number because it is at equal distance from previous prime (1230212231) and next prime (1230212233).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1230212231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188382 + ... + 194802.

It is an arithmetic number, because the mean of its divisors is an integer number (53463150).

Almost surely, 21230212232 is an apocalyptic number.

1230212232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1230212232 is an abundant number, since it is smaller than the sum of its proper divisors (2191429368).

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

1230212232 is a wasteful number, since it uses less digits than its factorization.

1230212232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7323 (or 7313 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1230212232 is about 35074.3814200621. The cubic root of 1230212232 is about 1071.5028905705.

Adding to 1230212232 its reverse (2322120321), we get a palindrome (3552332553).

The spelling of 1230212232 in words is "one billion, two hundred thirty million, two hundred twelve thousand, two hundred thirty-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 216 887 1774 2661 3548 5322 6421 7096 7983 10644 12842 15966 19263 21288 23949 25684 31932 38526 47898 51368 57789 63864 77052 95796 115578 154104 173367 191592 231156 346734 462312 693468 1386936 5695427 11390854 17086281 22781708 34172562 45563416 51258843 68345124 102517686 136690248 153776529 205035372 307553058 410070744 615106116 1230212232