22499893 has 12 divisors (see below), whose sum is σ = 25051404. Its totient is φ = 20088000.

The previous prime is 22499863. The next prime is 22499903. The reversal of 22499893 is 39899422.

It can be written as a sum of positive squares in 2 ways, for example, as 3122289 + 19377604 = 1767^2 + 4402^2 .

It is not a de Polignac number, because 22499893 - 2²¹ = 20402741 is a prime.

It is a super-2 number, since 2×22499893² = 1012490370022898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22499803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11593 + ... + 13393.

It is an arithmetic number, because the mean of its divisors is an integer number (2087617).

Almost surely, 2^22499893 is an apocalyptic number.

It is an amenable number.

22499893 is a deficient number, since it is larger than the sum of its proper divisors (2551511).

22499893 is a wasteful number, since it uses less digits than its factorization.

22499893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876 (or 1845 counting only the distinct ones).

The product of its digits is 279936, while the sum is 46.

The square root of 22499893 is about 4743.4052114488. The cubic root of 22499893 is about 282.3103611487.

The spelling of 22499893 in words is "twenty-two million, four hundred ninety-nine thousand, eight hundred ninety-three".