22493893 has 8 divisors (see below), whose sum is σ = 22874328. Its totient is φ = 22116864.

The previous prime is 22493881. The next prime is 22493897. The reversal of 22493893 is 39839422.

It can be written as a sum of positive squares in 4 ways, for example, as 3814209 + 18679684 = 1953^2 + 4322^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22493893 - 2⁹ = 22493381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22493897) 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, 14755 + ... + 16207.

It is an arithmetic number, because the mean of its divisors is an integer number (2859291).

Almost surely, 2^22493893 is an apocalyptic number.

It is an amenable number.

22493893 is a deficient number, since it is larger than the sum of its proper divisors (380435).

22493893 is a wasteful number, since it uses less digits than its factorization.

22493893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703.

The product of its digits is 93312, while the sum is 40.

The square root of 22493893 is about 4742.7727122433. The cubic root of 22493893 is about 282.2852645441.

The spelling of 22493893 in words is "twenty-two million, four hundred ninety-three thousand, eight hundred ninety-three".