7218790632 has 160 divisors (see below), whose sum is σ = 20513797920. Its totient is φ = 2371524480.

The previous prime is 7218790589. The next prime is 7218790651. The reversal of 7218790632 is 2360978127.

7218790632 is a `hidden beast` number, since 7 + 2 + 1 + 8 + 7 + 9 + 0 + 632 = 666.

It is a super-2 number, since 2×7218790632² (a number of 21 digits) contains 22 as substring.

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 39 ways as a sum of consecutive naturals, for example, 23513823 + ... + 23514129.

It is an arithmetic number, because the mean of its divisors is an integer number (128211237).

Almost surely, 2^7218790632 is an apocalyptic number.

7218790632 is a gapful number since it is divisible by the number (72) 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 7218790632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10256898960).

7218790632 is an abundant number, since it is smaller than the sum of its proper divisors (13295007288).

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

7218790632 is a wasteful number, since it uses less digits than its factorization.

7218790632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 7218790632 is about 84963.4664547063. The cubic root of 7218790632 is about 1932.6571392152.

The spelling of 7218790632 in words is "seven billion, two hundred eighteen million, seven hundred ninety thousand, six hundred thirty-two".