7272215 has 4 divisors (see below), whose sum is σ = 8726664. Its totient is φ = 5817768.

The previous prime is 7272191. The next prime is 7272217. The reversal of 7272215 is 5122727.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7272215 - 2⁶ = 7272151 is a prime.

It is a super-2 number, since 2×7272215² = 105770222012450, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7272217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727217 + ... + 727226.

It is an arithmetic number, because the mean of its divisors is an integer number (2181666).

Almost surely, 2^7272215 is an apocalyptic number.

7272215 is a deficient number, since it is larger than the sum of its proper divisors (1454449).

7272215 is a wasteful number, since it uses less digits than its factorization.

7272215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454448.

The product of its digits is 1960, while the sum is 26.

The square root of 7272215 is about 2696.7044702748. The cubic root of 7272215 is about 193.7413121321.

The spelling of 7272215 in words is "seven million, two hundred seventy-two thousand, two hundred fifteen".