22493136 has 40 divisors (see below), whose sum is σ = 58718464. Its totient is φ = 7418880.

The previous prime is 22493129. The next prime is 22493143. The reversal of 22493136 is 63139422.

It is an interprime number because it is at equal distance from previous prime (22493129) and next prime (22493143).

It is a super-2 number, since 2×22493136² = 1011882334228992, which contains 22 as substring.

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, 2241 + ... + 7071.

Almost surely, 2^22493136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22493136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29359232).

22493136 is an abundant number, since it is smaller than the sum of its proper divisors (36225328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22493136 is a wasteful number, since it uses less digits than its factorization.

22493136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4939 (or 4933 counting only the distinct ones).

The product of its digits is 7776, while the sum is 30.

The square root of 22493136 is about 4742.6929059343. The cubic root of 22493136 is about 282.2820978721.

The spelling of 22493136 in words is "twenty-two million, four hundred ninety-three thousand, one hundred thirty-six".