78731260 has 24 divisors (see below), whose sum is σ = 165510576. Its totient is φ = 31459200.

The previous prime is 78731221. The next prime is 78731291. The reversal of 78731260 is 6213787.

It is a super-2 number, since 2×78731260² = 12397222602375200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27664 + ... + 30376.

It is an arithmetic number, because the mean of its divisors is an integer number (6896274).

Almost surely, 2^78731260 is an apocalyptic number.

It is an amenable number.

78731260 is an abundant number, since it is smaller than the sum of its proper divisors (86779316).

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

78731260 is a wasteful number, since it uses less digits than its factorization.

78731260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4173 (or 4171 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 78731260 is about 8873.0637324433. The cubic root of 78731260 is about 428.5969412325.

The spelling of 78731260 in words is "seventy-eight million, seven hundred thirty-one thousand, two hundred sixty".