22247900 has 72 divisors (see below), whose sum is σ = 53434080. Its totient is φ = 7997440.

The previous prime is 22247891. The next prime is 22247909. The reversal of 22247900 is 974222.

It is an interprime number because it is at equal distance from previous prime (22247891) and next prime (22247909).

It is a self number, because there is not a number n which added to its sum of digits gives 22247900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22247909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38816 + ... + 39384.

It is an arithmetic number, because the mean of its divisors is an integer number (742140).

Almost surely, 2^22247900 is an apocalyptic number.

22247900 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 22247900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26717040).

22247900 is an abundant number, since it is smaller than the sum of its proper divisors (31186180).

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

22247900 is a wasteful number, since it uses less digits than its factorization.

22247900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 22247900 is about 4716.7679612209. The cubic root of 22247900 is about 281.2524674681.

The spelling of 22247900 in words is "twenty-two million, two hundred forty-seven thousand, nine hundred".