78265056 has 24 divisors (see below), whose sum is σ = 205446024. Its totient is φ = 26088320.

The previous prime is 78265039. The next prime is 78265069. The reversal of 78265056 is 65056287.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×78265056² = 12250837981366272, which contains 22 as substring.

It is a congruent number.

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, 407535 + ... + 407726.

It is an arithmetic number, because the mean of its divisors is an integer number (8560251).

Almost surely, 2^78265056 is an apocalyptic number.

It is an amenable number.

78265056 is an abundant number, since it is smaller than the sum of its proper divisors (127180968).

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

78265056 is a wasteful number, since it uses less digits than its factorization.

78265056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815274 (or 815266 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 78265056 is about 8846.7539809808. The cubic root of 78265056 is about 427.7492927167.

The spelling of 78265056 in words is "seventy-eight million, two hundred sixty-five thousand, fifty-six".