79872426 has 64 divisors (see below), whose sum is σ = 189423360. Its totient is φ = 24860160.

The previous prime is 79872421. The next prime is 79872433. The reversal of 79872426 is 62427897.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79872421) by changing a digit.

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, 153046 + ... + 153566.

It is an arithmetic number, because the mean of its divisors is an integer number (2959740).

Almost surely, 2^79872426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79872426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94711680).

79872426 is an abundant number, since it is smaller than the sum of its proper divisors (109550934).

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

79872426 is a wasteful number, since it uses less digits than its factorization.

79872426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716 (or 710 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 79872426 is about 8937.1374611785. The cubic root of 79872426 is about 430.6577746068.

The spelling of 79872426 in words is "seventy-nine million, eight hundred seventy-two thousand, four hundred twenty-six".