22041900 has 108 divisors (see below), whose sum is σ = 72781800. Its totient is φ = 5564160.

The previous prime is 22041863. The next prime is 22041917. The reversal of 22041900 is 914022.

It is a super-2 number, since 2×22041900² = 971690711220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16456 + ... + 17744.

Almost surely, 2^22041900 is an apocalyptic number.

22041900 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 22041900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36390900).

22041900 is an abundant number, since it is smaller than the sum of its proper divisors (50739900).

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

22041900 is a wasteful number, since it uses less digits than its factorization.

22041900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328 (or 1318 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 22041900 is about 4694.8801901646. The cubic root of 22041900 is about 280.3817072959.

Adding to 22041900 its reverse (914022), we get a palindrome (22955922).

The spelling of 22041900 in words is "twenty-two million, forty-one thousand, nine hundred".