79403280 has 160 divisors (see below), whose sum is σ = 282839040. Its totient is φ = 18224640.

The previous prime is 79403279. The next prime is 79403281. The reversal of 79403280 is 8230497.

It is an interprime number because it is at equal distance from previous prime (79403279) and next prime (79403281).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79403281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49369 + ... + 50951.

It is an arithmetic number, because the mean of its divisors is an integer number (1767744).

Almost surely, 2^79403280 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 79403280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141419520).

79403280 is an abundant number, since it is smaller than the sum of its proper divisors (203435760).

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

79403280 is a wasteful number, since it uses less digits than its factorization.

79403280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 79403280 is about 8910.8518111346. The cubic root of 79403280 is about 429.8129346764.

The spelling of 79403280 in words is "seventy-nine million, four hundred three thousand, two hundred eighty".