79569420 has 96 divisors (see below), whose sum is σ = 265724928. Its totient is φ = 17394432.

The previous prime is 79569419. The next prime is 79569431. The reversal of 79569420 is 2496597.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5542 + ... + 13778.

It is an arithmetic number, because the mean of its divisors is an integer number (2767968).

Almost surely, 2^79569420 is an apocalyptic number.

79569420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79569420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132862464).

79569420 is an abundant number, since it is smaller than the sum of its proper divisors (186155508).

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

79569420 is a wasteful number, since it uses less digits than its factorization.

79569420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8279 (or 8277 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 79569420 is about 8920.1692809049. The cubic root of 79569420 is about 430.1124998595.

The spelling of 79569420 in words is "seventy-nine million, five hundred sixty-nine thousand, four hundred twenty".