22881745 has 16 divisors (see below), whose sum is σ = 29220048. Its totient is φ = 17141760.

The previous prime is 22881737. The next prime is 22881767. The reversal of 22881745 is 54718822.

22881745 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 8 ways, for example, as 138384 + 22743361 = 372^2 + 4769^2 .

It is not a de Polignac number, because 22881745 - 2³ = 22881737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19927 + ... + 21043.

It is an arithmetic number, because the mean of its divisors is an integer number (1826253).

Almost surely, 2^22881745 is an apocalyptic number.

It is an amenable number.

22881745 is a deficient number, since it is larger than the sum of its proper divisors (6338303).

22881745 is a wasteful number, since it uses less digits than its factorization.

22881745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380.

The product of its digits is 35840, while the sum is 37.

The square root of 22881745 is about 4783.4866990512. The cubic root of 22881745 is about 283.8984668129.

The spelling of 22881745 in words is "twenty-two million, eight hundred eighty-one thousand, seven hundred forty-five".