22497790 has 16 divisors (see below), whose sum is σ = 46281312. Its totient is φ = 7713504.

The previous prime is 22497779. The next prime is 22497791. The reversal of 22497790 is 9779422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22497791) 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, 160629 + ... + 160768.

It is an arithmetic number, because the mean of its divisors is an integer number (2892582).

Almost surely, 2^22497790 is an apocalyptic number.

22497790 is an abundant number, since it is smaller than the sum of its proper divisors (23783522).

22497790 is a wasteful number, since it uses less digits than its factorization.

22497790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321411.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 22497790 is about 4743.1835300777. The cubic root of 22497790 is about 282.3015652967.

The spelling of 22497790 in words is "twenty-two million, four hundred ninety-seven thousand, seven hundred ninety".