78204692 has 48 divisors (see below), whose sum is σ = 156183552. Its totient is φ = 34045440.

The previous prime is 78204691. The next prime is 78204697. The reversal of 78204692 is 29640287.

It is a super-2 number, since 2×78204692² = 12231947701629728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78204691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47678 + ... + 49290.

It is an arithmetic number, because the mean of its divisors is an integer number (3253824).

Almost surely, 2^78204692 is an apocalyptic number.

It is an amenable number.

78204692 is a deficient number, since it is larger than the sum of its proper divisors (77978860).

78204692 is a wasteful number, since it uses less digits than its factorization.

78204692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688 (or 1686 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 78204692 is about 8843.3416760860. The cubic root of 78204692 is about 427.6392934366.

The spelling of 78204692 in words is "seventy-eight million, two hundred four thousand, six hundred ninety-two".