22493040 has 160 divisors (see below), whose sum is σ = 76334400. Its totient is φ = 5455872.

The previous prime is 22493033. The next prime is 22493087. The reversal of 22493040 is 4039422.

It is a happy number.

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

It is a zygodrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 22493040.

It is a congruent number.

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, 150886 + ... + 151034.

It is an arithmetic number, because the mean of its divisors is an integer number (477090).

Almost surely, 2^22493040 is an apocalyptic number.

22493040 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 22493040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38167200).

22493040 is an abundant number, since it is smaller than the sum of its proper divisors (53841360).

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

22493040 is a wasteful number, since it uses less digits than its factorization.

22493040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 22493040 is about 4742.6827850912. The cubic root of 22493040 is about 282.2816962811.

The spelling of 22493040 in words is "twenty-two million, four hundred ninety-three thousand, forty".