22981971 has 8 divisors (see below), whose sum is σ = 30677904. Its totient is φ = 15303680.

The previous prime is 22981957. The next prime is 22981997. The reversal of 22981971 is 17918922.

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

It is a cyclic number.

It is not a de Polignac number, because 22981971 - 2⁵ = 22981939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22981271) 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, 990 + ... + 6851.

It is an arithmetic number, because the mean of its divisors is an integer number (3834738).

Almost surely, 2^22981971 is an apocalyptic number.

22981971 is a deficient number, since it is larger than the sum of its proper divisors (7695933).

22981971 is an equidigital number, since it uses as much as digits as its factorization.

22981971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8821.

The product of its digits is 18144, while the sum is 39.

The square root of 22981971 is about 4793.9515016320. The cubic root of 22981971 is about 284.3123712018.

The spelling of 22981971 in words is "twenty-two million, nine hundred eighty-one thousand, nine hundred seventy-one".