7213990628 has 24 divisors (see below), whose sum is σ = 13600765752. Its totient is φ = 3328268544.

The previous prime is 7213990583. The next prime is 7213990633. The reversal of 7213990628 is 8260993127.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 102779044 + 7111211584 = 10138^2 + 84328^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119426 + ... + 169382.

It is an arithmetic number, because the mean of its divisors is an integer number (566698573).

Almost surely, 2^7213990628 is an apocalyptic number.

It is an amenable number.

7213990628 is a deficient number, since it is larger than the sum of its proper divisors (6386775124).

7213990628 is a wasteful number, since it uses less digits than its factorization.

7213990628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52751 (or 52749 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 7213990628 is about 84935.2142988996. The cubic root of 7213990628 is about 1932.2286824570.

The spelling of 7213990628 in words is "seven billion, two hundred thirteen million, nine hundred ninety thousand, six hundred twenty-eight".