20122752 has 128 divisors (see below), whose sum is σ = 59976000. Its totient is φ = 5935104.

The previous prime is 20122733. The next prime is 20122757. The reversal of 20122752 is 25722102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (20122757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144699 + ... + 144837.

Almost surely, 2^20122752 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 20122752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29988000).

20122752 is an abundant number, since it is smaller than the sum of its proper divisors (39853248).

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

20122752 is a wasteful number, since it uses less digits than its factorization.

20122752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 20122752 is about 4485.8390519500. The cubic root of 20122752 is about 271.9959630312.

Adding to 20122752 its reverse (25722102), we get a palindrome (45844854).

The spelling of 20122752 in words is "twenty million, one hundred twenty-two thousand, seven hundred fifty-two".