78622956 has 72 divisors (see below), whose sum is σ = 205208640. Its totient is φ = 25369344.

The previous prime is 78622937. The next prime is 78622981. The reversal of 78622956 is 65922687.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169581 + ... + 170043.

It is an arithmetic number, because the mean of its divisors is an integer number (2850120).

Almost surely, 2^78622956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78622956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102604320).

78622956 is an abundant number, since it is smaller than the sum of its proper divisors (126585684).

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

78622956 is a wasteful number, since it uses less digits than its factorization.

78622956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615 (or 610 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 78622956 is about 8866.9586668711. The cubic root of 78622956 is about 428.4003227432.

The spelling of 78622956 in words is "seventy-eight million, six hundred twenty-two thousand, nine hundred fifty-six".