79155216 has 120 divisors (see below), whose sum is σ = 266560320. Its totient is φ = 21420288.

The previous prime is 79155187. The next prime is 79155221. The reversal of 79155216 is 61255197.

79155216 is a `hidden beast` number, since 7 + 91 + 552 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 17086 + ... + 21218.

It is an arithmetic number, because the mean of its divisors is an integer number (2221336).

Almost surely, 2^79155216 is an apocalyptic number.

79155216 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79155216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133280160).

79155216 is an abundant number, since it is smaller than the sum of its proper divisors (187405104).

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

79155216 is a wasteful number, since it uses less digits than its factorization.

79155216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173 (or 4164 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 79155216 is about 8896.9217148405. The cubic root of 79155216 is about 429.3648745094.

It can be divided in two parts, 7915 and 5216, that added together give a palindrome (13131).

The spelling of 79155216 in words is "seventy-nine million, one hundred fifty-five thousand, two hundred sixteen".