22981542 has 16 divisors (see below), whose sum is σ = 46830960. Its totient is φ = 7515872.

The previous prime is 22981513. The next prime is 22981547. The reversal of 22981542 is 24518922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22981547) 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, 35817 + ... + 36452.

It is an arithmetic number, because the mean of its divisors is an integer number (2926935).

Almost surely, 2^22981542 is an apocalyptic number.

22981542 is an abundant number, since it is smaller than the sum of its proper divisors (23849418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22981542 is a wasteful number, since it uses less digits than its factorization.

22981542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72327.

The product of its digits is 11520, while the sum is 33.

The square root of 22981542 is about 4793.9067575413. The cubic root of 22981542 is about 284.3106021228.

The spelling of 22981542 in words is "twenty-two million, nine hundred eighty-one thousand, five hundred forty-two".