22532040 has 128 divisors (see below), whose sum is σ = 77644800. Its totient is φ = 5806080.

The previous prime is 22532023. The next prime is 22532051. The reversal of 22532040 is 4023522.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 33144 + ... + 33816.

It is an arithmetic number, because the mean of its divisors is an integer number (606600).

Almost surely, 2^22532040 is an apocalyptic number.

22532040 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 22532040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38822400).

22532040 is an abundant number, since it is smaller than the sum of its proper divisors (55112760).

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

22532040 is a wasteful number, since it uses less digits than its factorization.

22532040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22532040 is about 4746.7926013257. The cubic root of 22532040 is about 282.4447486381. Note that the first 3 decimals are identical.

Adding to 22532040 its reverse (4023522), we get a palindrome (26555562).

The spelling of 22532040 in words is "twenty-two million, five hundred thirty-two thousand, forty".