7215872 has 36 divisors (see below), whose sum is σ = 14643216. Its totient is φ = 3548160.

The previous prime is 7215869. The next prime is 7215893. The reversal of 7215872 is 2785127.

7215872 is nontrivially palindromic in base 13.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17978 + ... + 18374.

It is an arithmetic number, because the mean of its divisors is an integer number (406756).

Almost surely, 2^7215872 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 7215872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7321608).

7215872 is an abundant number, since it is smaller than the sum of its proper divisors (7427344).

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

7215872 is an equidigital number, since it uses as much as digits as its factorization.

7215872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 470 counting only the distinct ones).

The product of its digits is 7840, while the sum is 32.

The square root of 7215872 is about 2686.2375174210. The cubic root of 7215872 is about 193.2396639656.

The spelling of 7215872 in words is "seven million, two hundred fifteen thousand, eight hundred seventy-two".