22132500 has 120 divisors (see below), whose sum is σ = 69802656. Its totient is φ = 5424000.

The previous prime is 22132483. The next prime is 22132501. The reversal of 22132500 is 523122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22132500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22132501) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 97387 + ... + 97613.

Almost surely, 2^22132500 is an apocalyptic number.

22132500 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 22132500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34901328).

22132500 is an abundant number, since it is smaller than the sum of its proper divisors (47670156).

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

22132500 is a wasteful number, since it uses less digits than its factorization.

22132500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 22132500 is about 4704.5191040105. The cubic root of 22132500 is about 280.7653381295.

Adding to 22132500 its reverse (523122), we get a palindrome (22655622).

The spelling of 22132500 in words is "twenty-two million, one hundred thirty-two thousand, five hundred".