22640470 has 16 divisors (see below), whose sum is σ = 40927680. Its totient is φ = 9017344.

The previous prime is 22640467. The next prime is 22640477. The reversal of 22640470 is 7404622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22640477) 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, 2347 + ... + 7126.

It is an arithmetic number, because the mean of its divisors is an integer number (2557980).

Almost surely, 2^22640470 is an apocalyptic number.

22640470 is a deficient number, since it is larger than the sum of its proper divisors (18287210).

22640470 is a wasteful number, since it uses less digits than its factorization.

22640470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9719.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 22640470 is about 4758.2002900256. The cubic root of 22640470 is about 282.8970895283.

The spelling of 22640470 in words is "twenty-two million, six hundred forty thousand, four hundred seventy".