20255752 has 64 divisors (see below), whose sum is σ = 43623360. Its totient is φ = 8736000.

The previous prime is 20255743. The next prime is 20255771. The reversal of 20255752 is 25755202.

It is a self number, because there is not a number n which added to its sum of digits gives 20255752.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200502 + ... + 200602.

It is an arithmetic number, because the mean of its divisors is an integer number (681615).

Almost surely, 2^20255752 is an apocalyptic number.

20255752 is a gapful number since it is divisible by the number (22) 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 20255752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21811680).

20255752 is an abundant number, since it is smaller than the sum of its proper divisors (23367608).

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

20255752 is a wasteful number, since it uses less digits than its factorization.

20255752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 20255752 is about 4500.6390657328. The cubic root of 20255752 is about 272.5938940808.

It can be divided in two parts, 2025 and 5752, that added together give a palindrome (7777).

The spelling of 20255752 in words is "twenty million, two hundred fifty-five thousand, seven hundred fifty-two".