22305988 has 24 divisors (see below), whose sum is σ = 41690880. Its totient is φ = 10419360.

The previous prime is 22305977. The next prime is 22305991. The reversal of 22305988 is 88950322.

It is a super-2 number, since 2×22305988² = 995114201312288, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 495 + ... + 6697.

It is an arithmetic number, because the mean of its divisors is an integer number (1737120).

Almost surely, 2^22305988 is an apocalyptic number.

It is an amenable number.

22305988 is a deficient number, since it is larger than the sum of its proper divisors (19384892).

22305988 is a wasteful number, since it uses less digits than its factorization.

22305988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6267 (or 6265 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 22305988 is about 4722.9215534455. The cubic root of 22305988 is about 281.4970328016.

The spelling of 22305988 in words is "twenty-two million, three hundred five thousand, nine hundred eighty-eight".