79781480 has 32 divisors (see below), whose sum is σ = 187315200. Its totient is φ = 30524736.

The previous prime is 79781477. The next prime is 79781497. The reversal of 79781480 is 8418797.

It is a super-3 number, since 3×79781480³ (a number of 25 digits) contains 333 as substring.

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, 42440 + ... + 44279.

It is an arithmetic number, because the mean of its divisors is an integer number (5853600).

Almost surely, 2^79781480 is an apocalyptic number.

It is an amenable number.

79781480 is an abundant number, since it is smaller than the sum of its proper divisors (107533720).

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

79781480 is a wasteful number, since it uses less digits than its factorization.

79781480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86753 (or 86749 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 79781480 is about 8932.0479174711. The cubic root of 79781480 is about 430.4942576966.

The spelling of 79781480 in words is "seventy-nine million, seven hundred eighty-one thousand, four hundred eighty".