22561870 has 16 divisors (see below), whose sum is σ = 40725360. Its totient is φ = 8999424.

The previous prime is 22561859. The next prime is 22561933. The reversal of 22561870 is 7816522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814 + ... + 6766.

It is an arithmetic number, because the mean of its divisors is an integer number (2545335).

Almost surely, 2^22561870 is an apocalyptic number.

22561870 is a deficient number, since it is larger than the sum of its proper divisors (18163490).

22561870 is a wasteful number, since it uses less digits than its factorization.

22561870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6339.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 22561870 is about 4749.9336837476. The cubic root of 22561870 is about 282.5693358408.

The spelling of 22561870 in words is "twenty-two million, five hundred sixty-one thousand, eight hundred seventy".