7173972 has 36 divisors (see below), whose sum is σ = 19530420. Its totient is φ = 2207232.

The previous prime is 7173941. The next prime is 7173977. The reversal of 7173972 is 2793717.

It can be written as a sum of positive squares in 2 ways, for example, as 853776 + 6320196 = 924^2 + 2514^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7173977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7197 + ... + 8132.

Almost surely, 2^7173972 is an apocalyptic number.

It is an amenable number.

7173972 is an abundant number, since it is smaller than the sum of its proper divisors (12356448).

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

7173972 is a wasteful number, since it uses less digits than its factorization.

7173972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15352 (or 15347 counting only the distinct ones).

The product of its digits is 18522, while the sum is 36.

The square root of 7173972 is about 2678.4271504000. The cubic root of 7173972 is about 192.8649130320.

The spelling of 7173972 in words is "seven million, one hundred seventy-three thousand, nine hundred seventy-two".