28658629922 has 32 divisors (see below), whose sum is σ = 48315037680. Its totient is φ = 12657899520.

The previous prime is 28658629889. The next prime is 28658629933. The reversal of 28658629922 is 22992685682.

It can be written as a sum of positive squares in 8 ways, for example, as 3950248201 + 24708381721 = 62851^2 + 157189^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82979 + ... + 253382.

Almost surely, 2^28658629922 is an apocalyptic number.

28658629922 is a deficient number, since it is larger than the sum of its proper divisors (19656407758).

28658629922 is a wasteful number, since it uses less digits than its factorization.

28658629922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336518.

The product of its digits is 14929920, while the sum is 59.

The spelling of 28658629922 in words is "twenty-eight billion, six hundred fifty-eight million, six hundred twenty-nine thousand, nine hundred twenty-two".