22240500 has 48 divisors (see below), whose sum is σ = 64768704. Its totient is φ = 5930400.

The previous prime is 22240499. The next prime is 22240501. The reversal of 22240500 is 504222.

It is an interprime number because it is at equal distance from previous prime (22240499) and next prime (22240501).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22240500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22240501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5914 + ... + 8913.

It is an arithmetic number, because the mean of its divisors is an integer number (1349348).

Almost surely, 2^22240500 is an apocalyptic number.

22240500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22240500 is an abundant number, since it is smaller than the sum of its proper divisors (42528204).

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

22240500 is a wasteful number, since it uses less digits than its factorization.

22240500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14849 (or 14837 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 22240500 is about 4715.9834605308. The cubic root of 22240500 is about 281.2212810182.

Adding to 22240500 its reverse (504222), we get a palindrome (22744722).

The spelling of 22240500 in words is "twenty-two million, two hundred forty thousand, five hundred".