22981911 has 8 divisors (see below), whose sum is σ = 30664704. Its totient is φ = 15310200.

The previous prime is 22981897. The next prime is 22981927. The reversal of 22981911 is 11918922.

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

It is not a de Polignac number, because 22981911 - 2⁵ = 22981879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22981411) 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, 6636 + ... + 9486.

It is an arithmetic number, because the mean of its divisors is an integer number (3833088).

Almost surely, 2^22981911 is an apocalyptic number.

22981911 is a deficient number, since it is larger than the sum of its proper divisors (7682793).

22981911 is a wasteful number, since it uses less digits than its factorization.

22981911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5541.

The product of its digits is 2592, while the sum is 33.

The square root of 22981911 is about 4793.9452437424. The cubic root of 22981911 is about 284.3121237795.

The spelling of 22981911 in words is "twenty-two million, nine hundred eighty-one thousand, nine hundred eleven".