78492712 has 16 divisors (see below), whose sum is σ = 147483360. Its totient is φ = 39163824.

The previous prime is 78492653. The next prime is 78492719. The reversal of 78492712 is 21729487.

It is a super-2 number, since 2×78492712² = 12322211674229888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78492719) 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, 6178 + ... + 13969.

It is an arithmetic number, because the mean of its divisors is an integer number (9217710).

Almost surely, 2^78492712 is an apocalyptic number.

It is an amenable number.

78492712 is a deficient number, since it is larger than the sum of its proper divisors (68990648).

78492712 is a wasteful number, since it uses less digits than its factorization.

78492712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20640 (or 20636 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 78492712 is about 8859.6112781544. The cubic root of 78492712 is about 428.1636344058.

The spelling of 78492712 in words is "seventy-eight million, four hundred ninety-two thousand, seven hundred twelve".