79040 has 56 divisors (see below), whose sum is σ = 213360. Its totient is φ = 27648.

The previous prime is 79039. The next prime is 79043. The reversal of 79040 is 4097.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (79043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4151 + ... + 4169.

It is an arithmetic number, because the mean of its divisors is an integer number (3810).

2⁷⁹⁰⁴⁰ 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 79040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106680).

79040 is an abundant number, since it is smaller than the sum of its proper divisors (134320).

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

79040 is a wasteful number, since it uses less digits than its factorization.

79040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 79040 is about 281.1405342529. The cubic root of 79040 is about 42.9156449731.

The spelling of 79040 in words is "seventy-nine thousand, forty".