7990628 has 6 divisors (see below), whose sum is σ = 13983606. Its totient is φ = 3995312.

The previous prime is 7990597. The next prime is 7990639. The reversal of 7990628 is 8260997.

It can be written as a sum of positive squares in only one way, i.e., 7795264 + 195364 = 2792^2 + 442^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998825 + ... + 998832.

It is an arithmetic number, because the mean of its divisors is an integer number (2330601).

Almost surely, 2^7990628 is an apocalyptic number.

It is an amenable number.

7990628 is a deficient number, since it is larger than the sum of its proper divisors (5992978).

7990628 is a wasteful number, since it uses less digits than its factorization.

7990628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997661 (or 1997659 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 7990628 is about 2826.7698880524. The cubic root of 7990628 is about 199.9218694821.

It can be divided in two parts, 7 and 990628, that multiplied together give a palindrome (6934396).

The spelling of 7990628 in words is "seven million, nine hundred ninety thousand, six hundred twenty-eight".