7990216 has 16 divisors (see below), whose sum is σ = 16134300. Its totient is φ = 3687744.

The previous prime is 7990183. The next prime is 7990231. The reversal of 7990216 is 6120997.

It can be written as a sum of positive squares in 2 ways, for example, as 7784100 + 206116 = 2790^2 + 454^2 .

It is an Ulam number.

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, 38311 + ... + 38518.

Almost surely, 2^7990216 is an apocalyptic number.

It is an amenable number.

7990216 is an abundant number, since it is smaller than the sum of its proper divisors (8144084).

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

7990216 is a wasteful number, since it uses less digits than its factorization.

7990216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76848 (or 76844 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 7990216 is about 2826.6970124157. The cubic root of 7990216 is about 199.9184334056.

The spelling of 7990216 in words is "seven million, nine hundred ninety thousand, two hundred sixteen".