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18930792 = 2331746399
BaseRepresentation
bin100100000110…
…1110001101000
31022121210011110
41020031301220
514321241132
61513430320
7316623546
oct110156150
938553143
1018930792
11a75aa91
12640b3a0
133bca86a
14272ad96
1519de1cc
hex120dc68

18930792 has 32 divisors (see below), whose sum is σ = 50112000. Its totient is φ = 5938944.

The previous prime is 18930787. The next prime is 18930803. The reversal of 18930792 is 29703981.

It is a self number, because there is not a number n which added to its sum of digits gives 18930792.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22792 + ... + 23607.

It is an arithmetic number, because the mean of its divisors is an integer number (1566000).

Almost surely, 218930792 is an apocalyptic number.

18930792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18930792 is an abundant number, since it is smaller than the sum of its proper divisors (31181208).

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

18930792 is a wasteful number, since it uses less digits than its factorization.

18930792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46425 (or 46421 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 18930792 is about 4350.9529990566. The cubic root of 18930792 is about 266.5157799183.

The spelling of 18930792 in words is "eighteen million, nine hundred thirty thousand, seven hundred ninety-two".

Divisors: 1 2 3 4 6 8 12 17 24 34 51 68 102 136 204 408 46399 92798 139197 185596 278394 371192 556788 788783 1113576 1577566 2366349 3155132 4732698 6310264 9465396 18930792