78500930 has 16 divisors (see below), whose sum is σ = 141892344. Its totient is φ = 31269120.

The previous prime is 78500927. The next prime is 78500977. The reversal of 78500930 is 3900587.

It can be written as a sum of positive squares in 4 ways, for example, as 47375689 + 31125241 = 6883^2 + 5579^2 .

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, 13877 + ... + 18696.

Almost surely, 2^78500930 is an apocalyptic number.

78500930 is a deficient number, since it is larger than the sum of its proper divisors (63391414).

78500930 is a wasteful number, since it uses less digits than its factorization.

78500930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32821.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 78500930 is about 8860.0750561155. The cubic root of 78500930 is about 428.1785764552.

The spelling of 78500930 in words is "seventy-eight million, five hundred thousand, nine hundred thirty".