22513800 has 96 divisors (see below), whose sum is σ = 70531200. Its totient is φ = 5940480.

The previous prime is 22513793. The next prime is 22513801. The reversal of 22513800 is 831522.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (22513801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94081 + ... + 94319.

It is an arithmetic number, because the mean of its divisors is an integer number (734700).

Almost surely, 2^22513800 is an apocalyptic number.

22513800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22513800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35265600).

22513800 is an abundant number, since it is smaller than the sum of its proper divisors (48017400).

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

22513800 is a wasteful number, since it uses less digits than its factorization.

22513800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 22513800 is about 4744.8709149986. The cubic root of 22513800 is about 282.3685137449.

The spelling of 22513800 in words is "twenty-two million, five hundred thirteen thousand, eight hundred".