22989240 has 96 divisors (see below), whose sum is σ = 78670800. Its totient is φ = 5806080.

The previous prime is 22989217. The next prime is 22989277. The reversal of 22989240 is 4298922.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 22989195 and 22989204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5160 + ... + 8520.

Almost surely, 2^22989240 is an apocalyptic number.

22989240 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 22989240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39335400).

22989240 is an abundant number, since it is smaller than the sum of its proper divisors (55681560).

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

22989240 is a wasteful number, since it uses less digits than its factorization.

22989240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397 (or 3390 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 22989240 is about 4794.7095845317. The cubic root of 22989240 is about 284.3423432290.

The spelling of 22989240 in words is "twenty-two million, nine hundred eighty-nine thousand, two hundred forty".