22133900 has 36 divisors (see below), whose sum is σ = 48304200. Its totient is φ = 8803200.

The previous prime is 22133899. The next prime is 22133921. The reversal of 22133900 is 933122.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20576 + ... + 21624.

Almost surely, 2^22133900 is an apocalyptic number.

22133900 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 22133900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24152100).

22133900 is an abundant number, since it is smaller than the sum of its proper divisors (26170300).

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

22133900 is a wasteful number, since it uses less digits than its factorization.

22133900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 1267 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 22133900 is about 4704.6678947615. The cubic root of 22133900 is about 280.7712579786.

The spelling of 22133900 in words is "twenty-two million, one hundred thirty-three thousand, nine hundred".