7215264 has 96 divisors (see below), whose sum is σ = 24071040. Its totient is φ = 2059776.

The previous prime is 7215239. The next prime is 7215277. The reversal of 7215264 is 4625127.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5452 + ... + 6644.

It is an arithmetic number, because the mean of its divisors is an integer number (250740).

Almost surely, 2^7215264 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 7215264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12035520).

7215264 is an abundant number, since it is smaller than the sum of its proper divisors (16855776).

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

7215264 is a wasteful number, since it uses less digits than its factorization.

7215264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219 (or 1205 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 7215264 is about 2686.1243455953. The cubic root of 7215264 is about 193.2342364388.

The spelling of 7215264 in words is "seven million, two hundred fifteen thousand, two hundred sixty-four".