78271056 has 40 divisors (see below), whose sum is σ = 224668160. Its totient is φ = 26090208.

The previous prime is 78271049. The next prime is 78271069. The reversal of 78271056 is 65017287.

It is a super-2 number, since 2×78271056² = 12252716414710272, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 78271056.

It is a congruent number.

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, 90160 + ... + 91023.

It is an arithmetic number, because the mean of its divisors is an integer number (5616704).

Almost surely, 2^78271056 is an apocalyptic number.

It is an amenable number.

78271056 is an abundant number, since it is smaller than the sum of its proper divisors (146397104).

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

78271056 is a wasteful number, since it uses less digits than its factorization.

78271056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181200 (or 181188 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 78271056 is about 8847.0930819111. The cubic root of 78271056 is about 427.7602232235.

The spelling of 78271056 in words is "seventy-eight million, two hundred seventy-one thousand, fifty-six".