22881900 has 72 divisors (see below), whose sum is σ = 67026960. Its totient is φ = 6026240.

The previous prime is 22881863. The next prime is 22881917. The reversal of 22881900 is 918822.

It is a super-2 number, since 2×22881900² = 1047162695220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26272 + ... + 27128.

It is an arithmetic number, because the mean of its divisors is an integer number (930930).

Almost surely, 2^22881900 is an apocalyptic number.

22881900 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 22881900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33513480).

22881900 is an abundant number, since it is smaller than the sum of its proper divisors (44145060).

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

22881900 is a wasteful number, since it uses less digits than its factorization.

22881900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 22881900 is about 4783.5029005949. The cubic root of 22881900 is about 283.8991078503.

It can be divided in two parts, 228 and 81900, that added together give a palindrome (82128).

The spelling of 22881900 in words is "twenty-two million, eight hundred eighty-one thousand, nine hundred".