22389000 has 128 divisors (see below), whose sum is σ = 74131200. Its totient is φ = 5606400.

The previous prime is 22388987. The next prime is 22389019. The reversal of 22389000 is 98322.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50781 + ... + 51219.

It is an arithmetic number, because the mean of its divisors is an integer number (579150).

Almost surely, 2^22389000 is an apocalyptic number.

22389000 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 22389000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37065600).

22389000 is an abundant number, since it is smaller than the sum of its proper divisors (51742200).

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

22389000 is a wasteful number, since it uses less digits than its factorization.

22389000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 22389000 is about 4731.7015966775. The cubic root of 22389000 is about 281.8457986999.

The spelling of 22389000 in words is "twenty-two million, three hundred eighty-nine thousand".