20752272 has 60 divisors (see below), whose sum is σ = 58438224. Its totient is φ = 6874560.

The previous prime is 20752267. The next prime is 20752289. The reversal of 20752272 is 27225702.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30043 + ... + 30725.

Almost surely, 2^20752272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20752272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29219112).

20752272 is an abundant number, since it is smaller than the sum of its proper divisors (37685952).

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

20752272 is a wasteful number, since it uses less digits than its factorization.

20752272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 20752272 is about 4555.4661671447. The cubic root of 20752272 is about 274.8032620399.

Adding to 20752272 its reverse (27225702), we get a palindrome (47977974).

The spelling of 20752272 in words is "twenty million, seven hundred fifty-two thousand, two hundred seventy-two".