7215016 has 16 divisors (see below), whose sum is σ = 13858740. Its totient is φ = 3519360.

The previous prime is 7215011. The next prime is 7215053. The reversal of 7215016 is 6105127.

It can be written as a sum of positive squares in 2 ways, for example, as 6916900 + 298116 = 2630^2 + 546^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7215011) 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, 10671 + ... + 11326.

Almost surely, 2^7215016 is an apocalyptic number.

It is an amenable number.

7215016 is a deficient number, since it is larger than the sum of its proper divisors (6643724).

7215016 is a wasteful number, since it uses less digits than its factorization.

7215016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22044 (or 22040 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 7215016 is about 2686.0781820342. The cubic root of 7215016 is about 193.2320224916.

Subtracting from 7215016 its product of nonzero digits (420), we obtain a square (7214596 = 2686²).

The spelling of 7215016 in words is "seven million, two hundred fifteen thousand, sixteen".