22820128 has 12 divisors (see below), whose sum is σ = 44927190. Its totient is φ = 11410048.

The previous prime is 22820113. The next prime is 22820141. The reversal of 22820128 is 82102822.

It can be written as a sum of positive squares in only one way, i.e., 19820304 + 2999824 = 4452^2 + 1732^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356533 + ... + 356596.

Almost surely, 2^22820128 is an apocalyptic number.

It is an amenable number.

22820128 is a deficient number, since it is larger than the sum of its proper divisors (22107062).

22820128 is an equidigital number, since it uses as much as digits as its factorization.

22820128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713139 (or 713131 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 22820128 is about 4777.0417624300. The cubic root of 22820128 is about 283.6434061766.

The spelling of 22820128 in words is "twenty-two million, eight hundred twenty thousand, one hundred twenty-eight".