22881149 has 4 divisors (see below), whose sum is σ = 24085440. Its totient is φ = 21676860.

The previous prime is 22881137. The next prime is 22881163. The reversal of 22881149 is 94118822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22881149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22881109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602117 + ... + 602154.

It is an arithmetic number, because the mean of its divisors is an integer number (6021360).

Almost surely, 2^22881149 is an apocalyptic number.

It is an amenable number.

22881149 is a deficient number, since it is larger than the sum of its proper divisors (1204291).

22881149 is a wasteful number, since it uses less digits than its factorization.

22881149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204290.

The product of its digits is 9216, while the sum is 35.

The square root of 22881149 is about 4783.4244009914. The cubic root of 22881149 is about 283.8960018938.

The spelling of 22881149 in words is "twenty-two million, eight hundred eighty-one thousand, one hundred forty-nine".