22912987 has 8 divisors (see below), whose sum is σ = 23811840. Its totient is φ = 22021440.

The previous prime is 22912963. The next prime is 22912997. The reversal of 22912987 is 78921922.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-22912987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22912997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5062 + ... + 8452.

It is an arithmetic number, because the mean of its divisors is an integer number (2976480).

Almost surely, 2^22912987 is an apocalyptic number.

22912987 is a deficient number, since it is larger than the sum of its proper divisors (898853).

22912987 is a wasteful number, since it uses less digits than its factorization.

22912987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3653.

The product of its digits is 36288, while the sum is 40.

The square root of 22912987 is about 4786.7511947040. The cubic root of 22912987 is about 284.0276166690.

The spelling of 22912987 in words is "twenty-two million, nine hundred twelve thousand, nine hundred eighty-seven".