20128752 has 120 divisors (see below), whose sum is σ = 67832960. Its totient is φ = 5443200.

The previous prime is 20128751. The next prime is 20128763. The reversal of 20128752 is 25782102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20128751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18627 + ... + 19677.

Almost surely, 2^20128752 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 20128752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33916480).

20128752 is an abundant number, since it is smaller than the sum of its proper divisors (47704208).

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

20128752 is a wasteful number, since it uses less digits than its factorization.

20128752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 20128752 is about 4486.5077733132. The cubic root of 20128752 is about 272.0229940192.

The spelling of 20128752 in words is "twenty million, one hundred twenty-eight thousand, seven hundred fifty-two".