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19068912 = 2433371193
BaseRepresentation
bin100100010111…
…1011111110000
31022212210122000
41020233133300
514340201122
61520414000
7321040332
oct110573760
938783560
1019068912
11a844835
126477300
133c486a5
142765452
151a1a0ac
hex122f7f0

19068912 has 80 divisors (see below), whose sum is σ = 56261280. Its totient is φ = 6179328.

The previous prime is 19068911. The next prime is 19068943. The reversal of 19068912 is 21986091.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19068911) 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, 15388 + ... + 16580.

It is an arithmetic number, because the mean of its divisors is an integer number (703266).

Almost surely, 219068912 is an apocalyptic number.

19068912 is a gapful number since it is divisible by the number (12) 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 19068912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28130640).

19068912 is an abundant number, since it is smaller than the sum of its proper divisors (37192368).

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

19068912 is a wasteful number, since it uses less digits than its factorization.

19068912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 19068912 is about 4366.7965375089. The cubic root of 19068912 is about 267.1623807102.

The spelling of 19068912 in words is "nineteen million, sixty-eight thousand, nine hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 37 48 54 72 74 108 111 144 148 216 222 296 333 432 444 592 666 888 999 1193 1332 1776 1998 2386 2664 3579 3996 4772 5328 7158 7992 9544 10737 14316 15984 19088 21474 28632 32211 42948 44141 57264 64422 85896 88282 128844 132423 171792 176564 257688 264846 353128 397269 515376 529692 706256 794538 1059384 1191807 1589076 2118768 2383614 3178152 4767228 6356304 9534456 19068912