7918772224 has 56 divisors (see below), whose sum is σ = 17276463288. Its totient is φ = 3599400960.

The previous prime is 7918772203. The next prime is 7918772231. The reversal of 7918772224 is 4222778197.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46174 + ... + 134050.

It is an arithmetic number, because the mean of its divisors is an integer number (308508273).

Almost surely, 2^7918772224 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 7918772224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8638231644).

7918772224 is an abundant number, since it is smaller than the sum of its proper divisors (9357691064).

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

7918772224 is an equidigital number, since it uses as much as digits as its factorization.

7918772224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87914 (or 87890 counting only the distinct ones).

The product of its digits is 790272, while the sum is 49.

The square root of 7918772224 is about 88987.4835243699. The cubic root of 7918772224 is about 1993.2079790026.

The spelling of 7918772224 in words is "seven billion, nine hundred eighteen million, seven hundred seventy-two thousand, two hundred twenty-four".