78056972 has 12 divisors (see below), whose sum is σ = 156114000. Its totient is φ = 33452976.

The previous prime is 78056933. The next prime is 78056987. The reversal of 78056972 is 27965087.

78056972 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1393847 + ... + 1393902.

It is an arithmetic number, because the mean of its divisors is an integer number (13009500).

Almost surely, 2^78056972 is an apocalyptic number.

It is an amenable number.

78056972 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78056972 is a wasteful number, since it uses less digits than its factorization.

78056972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787760 (or 2787758 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 78056972 is about 8834.9856819352. The cubic root of 78056972 is about 427.3698693102.

The spelling of 78056972 in words is "seventy-eight million, fifty-six thousand, nine hundred seventy-two".