22813730 has 8 divisors (see below), whose sum is σ = 41064732. Its totient is φ = 9125488.

The previous prime is 22813717. The next prime is 22813733. The reversal of 22813730 is 3731822.

It can be written as a sum of positive squares in 2 ways, for example, as 22648081 + 165649 = 4759^2 + 407^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 22813730.

It is not an unprimeable number, because it can be changed into a prime (22813733) 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, 1140677 + ... + 1140696.

Almost surely, 2^22813730 is an apocalyptic number.

22813730 is a deficient number, since it is larger than the sum of its proper divisors (18251002).

22813730 is a wasteful number, since it uses less digits than its factorization.

22813730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281380.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 22813730 is about 4776.3720541851. The cubic root of 22813730 is about 283.6168956601.

The spelling of 22813730 in words is "twenty-two million, eight hundred thirteen thousand, seven hundred thirty".