22561790 has 8 divisors (see below), whose sum is σ = 40611240. Its totient is φ = 9024712.

The previous prime is 22561789. The next prime is 22561793. The reversal of 22561790 is 9716522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22561793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128080 + ... + 1128099.

It is an arithmetic number, because the mean of its divisors is an integer number (5076405).

Almost surely, 2^22561790 is an apocalyptic number.

22561790 is a deficient number, since it is larger than the sum of its proper divisors (18049450).

22561790 is a wasteful number, since it uses less digits than its factorization.

22561790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256186.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 22561790 is about 4749.9252625699. The cubic root of 22561790 is about 282.5690018618.

The spelling of 22561790 in words is "twenty-two million, five hundred sixty-one thousand, seven hundred ninety".