79122240 has 168 divisors, whose sum is σ = 276258528. Its totient is φ = 20782080.

The previous prime is 79122227. The next prime is 79122259. The reversal of 79122240 is 4222197.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238875 + ... + 239205.

It is an arithmetic number, because the mean of its divisors is an integer number (1644396).

Almost surely, 2^79122240 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 79122240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138129264).

79122240 is an abundant number, since it is smaller than the sum of its proper divisors (197136288).

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

79122240 is a wasteful number, since it uses less digits than its factorization.

79122240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 79122240 is about 8895.0682965338. The cubic root of 79122240 is about 429.3052418726.

The spelling of 79122240 in words is "seventy-nine million, one hundred twenty-two thousand, two hundred forty".