7215090 has 16 divisors (see below), whose sum is σ = 17316288. Its totient is φ = 1924016.

The previous prime is 7215067. The next prime is 7215119. The reversal of 7215090 is 905127.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7215090.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120222 + ... + 120281.

It is an arithmetic number, because the mean of its divisors is an integer number (1082268).

Almost surely, 2^7215090 is an apocalyptic number.

7215090 is an abundant number, since it is smaller than the sum of its proper divisors (10101198).

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

7215090 is a wasteful number, since it uses less digits than its factorization.

7215090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240513.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 7215090 is about 2686.0919567282. The cubic root of 7215090 is about 193.2326831102.

The spelling of 7215090 in words is "seven million, two hundred fifteen thousand, ninety".