22141800 has 72 divisors (see below), whose sum is σ = 74365590. Its totient is φ = 5904000.

The previous prime is 22141793. The next prime is 22141811. The reversal of 22141800 is 814122.

It can be written as a sum of positive squares in 3 ways, for example, as 14884164 + 7257636 = 3858^2 + 2694^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

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 17 ways as a sum of consecutive naturals, for example, 4351 + ... + 7950.

Almost surely, 2^22141800 is an apocalyptic number.

22141800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22141800 is an abundant number, since it is smaller than the sum of its proper divisors (52223790).

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

22141800 is a wasteful number, since it uses less digits than its factorization.

22141800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12323 (or 12311 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 22141800 is about 4705.5074115339. The cubic root of 22141800 is about 280.8046581641.

Adding to 22141800 its reverse (814122), we get a palindrome (22955922).

The spelling of 22141800 in words is "twenty-two million, one hundred forty-one thousand, eight hundred".