22732740 has 216 divisors, whose sum is σ = 80458560. Its totient is φ = 5170176.

The previous prime is 22732739. The next prime is 22732747. The reversal of 22732740 is 4723722.

It is not an unprimeable number, because it can be changed into a prime (22732747) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 988369 + ... + 988391.

Almost surely, 2^22732740 is an apocalyptic number.

22732740 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 22732740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40229280).

22732740 is an abundant number, since it is smaller than the sum of its proper divisors (57725820).

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

22732740 is a wasteful number, since it uses less digits than its factorization.

22732740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 22732740 is about 4767.8863241483. The cubic root of 22732740 is about 283.2808791785.

The spelling of 22732740 in words is "twenty-two million, seven hundred thirty-two thousand, seven hundred forty".