22513936 has 40 divisors (see below), whose sum is σ = 47417600. Its totient is φ = 10316160.

The previous prime is 22513919. The next prime is 22513951. The reversal of 22513936 is 63931522.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 22513898 and 22513907.

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, 8230 + ... + 10618.

It is an arithmetic number, because the mean of its divisors is an integer number (1185440).

Almost surely, 2^22513936 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 22513936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23708800).

22513936 is an abundant number, since it is smaller than the sum of its proper divisors (24903664).

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

22513936 is a wasteful number, since it uses less digits than its factorization.

22513936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447 (or 2441 counting only the distinct ones).

The product of its digits is 9720, while the sum is 31.

The square root of 22513936 is about 4744.8852462415. The cubic root of 22513936 is about 282.3690823153.

It can be divided in two parts, 225 and 13936, that added together give a square (14161 = 119²).

The spelling of 22513936 in words is "twenty-two million, five hundred thirteen thousand, nine hundred thirty-six".