28630922 has 4 divisors (see below), whose sum is σ = 42946386. Its totient is φ = 14315460.

The previous prime is 28630867. The next prime is 28630939. The reversal of 28630922 is 22903682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24098281 + 4532641 = 4909^2 + 2129^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7157729 + ... + 7157732.

Almost surely, 2^28630922 is an apocalyptic number.

28630922 is a deficient number, since it is larger than the sum of its proper divisors (14315464).

28630922 is a wasteful number, since it uses less digits than its factorization.

28630922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14315463.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 28630922 is about 5350.7870449122. The cubic root of 28630922 is about 305.9227523694.

The spelling of 28630922 in words is "twenty-eight million, six hundred thirty thousand, nine hundred twenty-two".