7172631220 has 24 divisors (see below), whose sum is σ = 15122546208. Its totient is φ = 2857620000.

The previous prime is 7172631217. The next prime is 7172631223. The reversal of 7172631220 is 221362717.

It is an interprime number because it is at equal distance from previous prime (7172631217) and next prime (7172631223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7172631223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 709386 + ... + 719425.

It is an arithmetic number, because the mean of its divisors is an integer number (630106092).

Almost surely, 2^7172631220 is an apocalyptic number.

It is an amenable number.

7172631220 is an abundant number, since it is smaller than the sum of its proper divisors (7949914988).

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

7172631220 is a wasteful number, since it uses less digits than its factorization.

7172631220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429071 (or 1429069 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 7172631220 is about 84691.3881100080. The cubic root of 7172631220 is about 1928.5289711628.

Adding to 7172631220 its reverse (221362717), we get a palindrome (7393993937).

The spelling of 7172631220 in words is "seven billion, one hundred seventy-two million, six hundred thirty-one thousand, two hundred twenty".