78823630 has 16 divisors (see below), whose sum is σ = 142111584. Its totient is φ = 31478560.

The previous prime is 78823627. The next prime is 78823643. The reversal of 78823630 is 3632887.

It is a self number, because there is not a number n which added to its sum of digits gives 78823630.

It is a congruent number.

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, 495 + ... + 12565.

It is an arithmetic number, because the mean of its divisors is an integer number (8881974).

Almost surely, 2^78823630 is an apocalyptic number.

78823630 is a deficient number, since it is larger than the sum of its proper divisors (63287954).

78823630 is a wasteful number, since it uses less digits than its factorization.

78823630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12731.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 78823630 is about 8878.2672859066. The cubic root of 78823630 is about 428.7644902128.

The spelling of 78823630 in words is "seventy-eight million, eight hundred twenty-three thousand, six hundred thirty".