7172872 has 32 divisors (see below), whose sum is σ = 16041600. Its totient is φ = 2939904.

The previous prime is 7172863. The next prime is 7172881. The reversal of 7172872 is 2782717.

It is an interprime number because it is at equal distance from previous prime (7172863) and next prime (7172881).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

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 7 ways as a sum of consecutive naturals, for example, 1497 + ... + 4072.

It is an arithmetic number, because the mean of its divisors is an integer number (501300).

Almost surely, 2^7172872 is an apocalyptic number.

It is an amenable number.

7172872 is an abundant number, since it is smaller than the sum of its proper divisors (8868728).

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

7172872 is a wasteful number, since it uses less digits than its factorization.

7172872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5605 (or 5601 counting only the distinct ones).

The product of its digits is 10976, while the sum is 34.

The square root of 7172872 is about 2678.2217981340. The cubic root of 7172872 is about 192.8550550692.

The spelling of 7172872 in words is "seven million, one hundred seventy-two thousand, eight hundred seventy-two".