79011840 has 112 divisors (see below), whose sum is σ = 253215648. Its totient is φ = 21037056.

The previous prime is 79011809. The next prime is 79011851. The reversal of 79011840 is 4811097.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 79011798 and 79011807.

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, 122559 + ... + 123201.

It is an arithmetic number, because the mean of its divisors is an integer number (2260854).

Almost surely, 2^79011840 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 79011840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126607824).

79011840 is an abundant number, since it is smaller than the sum of its proper divisors (174203808).

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

79011840 is an equidigital number, since it uses as much as digits as its factorization.

79011840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 79011840 is about 8888.8604443989. The cubic root of 79011840 is about 429.1054777291.

The spelling of 79011840 in words is "seventy-nine million, eleven thousand, eight hundred forty".