78572940 has 24 divisors (see below), whose sum is σ = 220004400. Its totient is φ = 20952768.

The previous prime is 78572909. The next prime is 78572951. The reversal of 78572940 is 4927587.

It is a junction number, because it is equal to n+sod(n) for n = 78572892 and 78572901.

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, 654715 + ... + 654834.

It is an arithmetic number, because the mean of its divisors is an integer number (9166850).

Almost surely, 2^78572940 is an apocalyptic number.

It is an amenable number.

78572940 is an abundant number, since it is smaller than the sum of its proper divisors (141431460).

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

78572940 is a wasteful number, since it uses less digits than its factorization.

78572940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309561 (or 1309559 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 78572940 is about 8864.1378599388. The cubic root of 78572940 is about 428.3094611730.

The spelling of 78572940 in words is "seventy-eight million, five hundred seventy-two thousand, nine hundred forty".