79534820 has 48 divisors (see below), whose sum is σ = 173804400. Its totient is φ = 30535680.

The previous prime is 79534801. The next prime is 79534837. The reversal of 79534820 is 2843597.

It can be written as a sum of positive squares in 8 ways, for example, as 964324 + 78570496 = 982^2 + 8864^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139496 + ... + 140064.

It is an arithmetic number, because the mean of its divisors is an integer number (3620925).

Almost surely, 2^79534820 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 79534820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86902200).

79534820 is an abundant number, since it is smaller than the sum of its proper divisors (94269580).

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

79534820 is a wasteful number, since it uses less digits than its factorization.

79534820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 79534820 is about 8918.2296449464. The cubic root of 79534820 is about 430.0501473875.

The spelling of 79534820 in words is "seventy-nine million, five hundred thirty-four thousand, eight hundred twenty".