22920000 has 140 divisors (see below), whose sum is σ = 76175616. Its totient is φ = 6080000.

The previous prime is 22919999. The next prime is 22920013. The reversal of 22920000 is 2922.

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

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 119905 + ... + 120095.

Almost surely, 2^22920000 is an apocalyptic number.

22920000 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 22920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38087808).

22920000 is an abundant number, since it is smaller than the sum of its proper divisors (53255616).

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

22920000 is an equidigital number, since it uses as much as digits as its factorization.

22920000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 22920000 is about 4787.4836814343. The cubic root of 22920000 is about 284.0565912486.

Adding to 22920000 its reverse (2922), we get a palindrome (22922922).

The spelling of 22920000 in words is "twenty-two million, nine hundred twenty thousand".