78500772 has 48 divisors (see below), whose sum is σ = 232597120. Its totient is φ = 22428576.

The previous prime is 78500749. The next prime is 78500797. The reversal of 78500772 is 27700587.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51163 + ... + 52674.

Almost surely, 2^78500772 is an apocalyptic number.

It is an amenable number.

78500772 is an abundant number, since it is smaller than the sum of its proper divisors (154096348).

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

78500772 is a wasteful number, since it uses less digits than its factorization.

78500772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103857 (or 103849 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 36.

The square root of 78500772 is about 8860.0661397080. The cubic root of 78500772 is about 428.1782891879.

The spelling of 78500772 in words is "seventy-eight million, five hundred thousand, seven hundred seventy-two".