22961428 has 12 divisors (see below), whose sum is σ = 45922912. Its totient is φ = 9840600.

The previous prime is 22961413. The next prime is 22961453. The reversal of 22961428 is 82416922.

22961428 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 22961393 and 22961402.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 409998 + ... + 410053.

Almost surely, 2^22961428 is an apocalyptic number.

22961428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22961428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22961428 is a wasteful number, since it uses less digits than its factorization.

22961428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820062 (or 820060 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 22961428 is about 4791.8084268885. The cubic root of 22961428 is about 284.2276327465.

The spelling of 22961428 in words is "twenty-two million, nine hundred sixty-one thousand, four hundred twenty-eight".