22605988 has 12 divisors (see below), whose sum is σ = 41887692. Its totient is φ = 10638080.

The previous prime is 22605949. The next prime is 22606019. The reversal of 22605988 is 88950622.

It can be written as a sum of positive squares in 2 ways, for example, as 19430464 + 3175524 = 4408^2 + 1782^2 .

It is a super-2 number, since 2×22605988² = 1022061386912288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22605988.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166153 + ... + 166288.

It is an arithmetic number, because the mean of its divisors is an integer number (3490641).

Almost surely, 2^22605988 is an apocalyptic number.

It is an amenable number.

22605988 is a deficient number, since it is larger than the sum of its proper divisors (19281704).

22605988 is a wasteful number, since it uses less digits than its factorization.

22605988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332462 (or 332460 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 22605988 is about 4754.5754805240. The cubic root of 22605988 is about 282.7533967821.

The spelling of 22605988 in words is "twenty-two million, six hundred five thousand, nine hundred eighty-eight".