78630492 has 12 divisors (see below), whose sum is σ = 183471176. Its totient is φ = 26210160.

The previous prime is 78630479. The next prime is 78630499. The reversal of 78630492 is 29403687.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 78630492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78630499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3276259 + ... + 3276282.

Almost surely, 2^78630492 is an apocalyptic number.

It is an amenable number.

78630492 is an abundant number, since it is smaller than the sum of its proper divisors (104840684).

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

78630492 is a wasteful number, since it uses less digits than its factorization.

78630492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6552548 (or 6552546 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 78630492 is about 8867.3836051002. The cubic root of 78630492 is about 428.4140096775.

The spelling of 78630492 in words is "seventy-eight million, six hundred thirty thousand, four hundred ninety-two".