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12405768 = 233516907
BaseRepresentation
bin101111010100…
…110000001000
3212100021111220
4233110300020
511133441033
61121522040
7210306264
oct57246010
925307456
1012405768
117003701
1241a3320
1327548bb
14190d0a4
151150bb3
hexbd4c08

12405768 has 16 divisors (see below), whose sum is σ = 31014480. Its totient is φ = 4135248.

The previous prime is 12405751. The next prime is 12405779. The reversal of 12405768 is 86750421.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258430 + ... + 258477.

It is an arithmetic number, because the mean of its divisors is an integer number (1938405).

Almost surely, 212405768 is an apocalyptic number.

It is an amenable number.

12405768 is an abundant number, since it is smaller than the sum of its proper divisors (18608712).

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

12405768 is a wasteful number, since it uses less digits than its factorization.

12405768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516916 (or 516912 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 12405768 is about 3522.1822780770. The cubic root of 12405768 is about 231.4947884637.

The spelling of 12405768 in words is "twelve million, four hundred five thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 24 516907 1033814 1550721 2067628 3101442 4135256 6202884 12405768