78342792 has 32 divisors (see below), whose sum is σ = 213662880. Its totient is φ = 23740160.

The previous prime is 78342791. The next prime is 78342793. The reversal of 78342792 is 29724387.

It is an interprime number because it is at equal distance from previous prime (78342791) and next prime (78342793).

It is a super-2 number, since 2×78342792² = 12275186116710528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78342791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148113 + ... + 148640.

It is an arithmetic number, because the mean of its divisors is an integer number (6676965).

Almost surely, 2^78342792 is an apocalyptic number.

It is an amenable number.

78342792 is an abundant number, since it is smaller than the sum of its proper divisors (135320088).

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

78342792 is a wasteful number, since it uses less digits than its factorization.

78342792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296773 (or 296769 counting only the distinct ones).

The product of its digits is 169344, while the sum is 42.

The square root of 78342792 is about 8851.1463664319. The cubic root of 78342792 is about 427.8908651198.

The spelling of 78342792 in words is "seventy-eight million, three hundred forty-two thousand, seven hundred ninety-two".