22996990 has 16 divisors (see below), whose sum is σ = 41459040. Its totient is φ = 9184480.

The previous prime is 22996951. The next prime is 22996991. The reversal of 22996990 is 9969922.

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 22996990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22996991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7020 + ... + 9760.

It is an arithmetic number, because the mean of its divisors is an integer number (2591190).

Almost surely, 2^22996990 is an apocalyptic number.

22996990 is a deficient number, since it is larger than the sum of its proper divisors (18462050).

22996990 is a wasteful number, since it uses less digits than its factorization.

22996990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3587.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 22996990 is about 4795.5176988517. The cubic root of 22996990 is about 284.3742915894.

It can be divided in two parts, 2 and 2996990, that added together give a palindrome (2996992).

The spelling of 22996990 in words is "twenty-two million, nine hundred ninety-six thousand, nine hundred ninety".