79881282 has 128 divisors (see below), whose sum is σ = 206841600. Its totient is φ = 22643712.

The previous prime is 79881239. The next prime is 79881289. The reversal of 79881282 is 28218897.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (79881289) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 706858 + ... + 706970.

It is an arithmetic number, because the mean of its divisors is an integer number (1615950).

Almost surely, 2^79881282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79881282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103420800).

79881282 is an abundant number, since it is smaller than the sum of its proper divisors (126960318).

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

79881282 is a wasteful number, since it uses less digits than its factorization.

79881282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 203 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 79881282 is about 8937.6329081027. The cubic root of 79881282 is about 430.6736906724.

The spelling of 79881282 in words is "seventy-nine million, eight hundred eighty-one thousand, two hundred eighty-two".