22431045 has 32 divisors (see below), whose sum is σ = 44174592. Its totient is φ = 9464832.

The previous prime is 22430987. The next prime is 22431047. The reversal of 22431045 is 54013422.

It is not a de Polignac number, because 22431045 - 2⁸ = 22430789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6852 + ... + 9581.

It is an arithmetic number, because the mean of its divisors is an integer number (1380456).

Almost surely, 2^22431045 is an apocalyptic number.

It is an amenable number.

22431045 is a deficient number, since it is larger than the sum of its proper divisors (21743547).

22431045 is a wasteful number, since it uses less digits than its factorization.

22431045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16461.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 22431045 is about 4736.1424176222. The cubic root of 22431045 is about 282.0221173740.

Adding to 22431045 its reverse (54013422), we get a palindrome (76444467).

The spelling of 22431045 in words is "twenty-two million, four hundred thirty-one thousand, forty-five".