79487280 has 120 divisors (see below), whose sum is σ = 272112048. Its totient is φ = 20786688.

The previous prime is 79487237. The next prime is 79487297. The reversal of 79487280 is 8278497.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37119 + ... + 39201.

Almost surely, 2^79487280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79487280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136056024).

79487280 is an abundant number, since it is smaller than the sum of its proper divisors (192624768).

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

79487280 is a wasteful number, since it uses less digits than its factorization.

79487280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155 (or 2146 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 79487280 is about 8915.5639193491. The cubic root of 79487280 is about 429.9644463122.

The spelling of 79487280 in words is "seventy-nine million, four hundred eighty-seven thousand, two hundred eighty".