78292712 has 16 divisors (see below), whose sum is σ = 146895360. Its totient is φ = 39120624.

The previous prime is 78292699. The next prime is 78292717. The reversal of 78292712 is 21729287.

It is a super-2 number, since 2×78292712² = 12259497504629888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78292717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17753 + ... + 21719.

It is an arithmetic number, because the mean of its divisors is an integer number (9180960).

Almost surely, 2^78292712 is an apocalyptic number.

It is an amenable number.

78292712 is a deficient number, since it is larger than the sum of its proper divisors (68602648).

78292712 is a wasteful number, since it uses less digits than its factorization.

78292712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6440 (or 6436 counting only the distinct ones).

The product of its digits is 28224, while the sum is 38.

The square root of 78292712 is about 8848.3169021006. The cubic root of 78292712 is about 427.7996704200.

The spelling of 78292712 in words is "seventy-eight million, two hundred ninety-two thousand, seven hundred twelve".