22040200 has 144 divisors (see below), whose sum is σ = 64566180. Its totient is φ = 6935040.

The previous prime is 22040191. The next prime is 22040219. The reversal of 22040200 is 204022.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 8892324 + 13147876 = 2982^2 + 3626^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 127314 + ... + 127486.

Almost surely, 2^22040200 is an apocalyptic number.

22040200 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 22040200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32283090).

22040200 is an abundant number, since it is smaller than the sum of its proper divisors (42525980).

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

22040200 is a wasteful number, since it uses less digits than its factorization.

22040200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 22040200 is about 4694.6991383900. The cubic root of 22040200 is about 280.3744988859.

Adding to 22040200 its reverse (204022), we get a palindrome (22244222).

It can be divided in two parts, 2 and 2040200, that multiplied together give a square (4080400 = 2020²).

The spelling of 22040200 in words is "twenty-two million, forty thousand, two hundred".