78556460 has 12 divisors (see below), whose sum is σ = 164968608. Its totient is φ = 31422576.

The previous prime is 78556381. The next prime is 78556481. The reversal of 78556460 is 6465587.

It is a super-2 number, since 2×78556460² = 12342234815463200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) 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, 1963892 + ... + 1963931.

It is an arithmetic number, because the mean of its divisors is an integer number (13747384).

Almost surely, 2^78556460 is an apocalyptic number.

It is an amenable number.

78556460 is an abundant number, since it is smaller than the sum of its proper divisors (86412148).

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

78556460 is a wasteful number, since it uses less digits than its factorization.

78556460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927832 (or 3927830 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 78556460 is about 8863.2082227600. The cubic root of 78556460 is about 428.2795143344.

The spelling of 78556460 in words is "seventy-eight million, five hundred fifty-six thousand, four hundred sixty".