22681790 has 16 divisors (see below), whose sum is σ = 41090112. Its totient is φ = 9014304.

The previous prime is 22681781. The next prime is 22681793. The reversal of 22681790 is 9718622.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22681790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22681793) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5654 + ... + 8793.

It is an arithmetic number, because the mean of its divisors is an integer number (2568132).

Almost surely, 2^22681790 is an apocalyptic number.

22681790 is a deficient number, since it is larger than the sum of its proper divisors (18408322).

22681790 is a wasteful number, since it uses less digits than its factorization.

22681790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14611.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 22681790 is about 4762.5402885435. The cubic root of 22681790 is about 283.0690854240.

The spelling of 22681790 in words is "twenty-two million, six hundred eighty-one thousand, seven hundred ninety".