22146988 has 12 divisors (see below), whose sum is σ = 41037192. Its totient is φ = 10422080.

The previous prime is 22146961. The next prime is 22146997. The reversal of 22146988 is 88964122.

It is a self number, because there is not a number n which added to its sum of digits gives 22146988.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162778 + ... + 162913.

It is an arithmetic number, because the mean of its divisors is an integer number (3419766).

Almost surely, 2^22146988 is an apocalyptic number.

It is an amenable number.

22146988 is a deficient number, since it is larger than the sum of its proper divisors (18890204).

22146988 is a wasteful number, since it uses less digits than its factorization.

22146988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325712 (or 325710 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 22146988 is about 4706.0586481683. The cubic root of 22146988 is about 280.8265880404.

The spelling of 22146988 in words is "twenty-two million, one hundred forty-six thousand, nine hundred eighty-eight".