22790628 has 36 divisors (see below), whose sum is σ = 65840320. Its totient is φ = 6511536.

The previous prime is 22790627. The next prime is 22790639. The reversal of 22790628 is 82609722.

22790628 is a `hidden beast` number, since 2 + 27 + 9 + 0 + 628 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 22790592 and 22790601.

It is not an unprimeable number, because it can be changed into a prime (22790627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44968 + ... + 45471.

Almost surely, 2^22790628 is an apocalyptic number.

22790628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22790628 is an abundant number, since it is smaller than the sum of its proper divisors (43049692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22790628 is a wasteful number, since it uses less digits than its factorization.

22790628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90456 (or 90451 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 22790628 is about 4773.9530789483. The cubic root of 22790628 is about 283.5211297858.

The spelling of 22790628 in words is "twenty-two million, seven hundred ninety thousand, six hundred twenty-eight".