79826816 has 32 divisors (see below), whose sum is σ = 160466400. Its totient is φ = 39553024.

The previous prime is 79826801. The next prime is 79826819. The reversal of 79826816 is 61862897.

79826816 = 426² + 427² + ... + 681².

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79826819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11705 + ... + 17223.

It is an arithmetic number, because the mean of its divisors is an integer number (5014575).

Almost surely, 2^79826816 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 79826816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80233200).

79826816 is an abundant number, since it is smaller than the sum of its proper divisors (80639584).

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

79826816 is a wasteful number, since it uses less digits than its factorization.

79826816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5646 (or 5634 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 79826816 is about 8934.5853848962. The cubic root of 79826816 is about 430.5757853560.

The spelling of 79826816 in words is "seventy-nine million, eight hundred twenty-six thousand, eight hundred sixteen".