20109752 has 32 divisors (see below), whose sum is σ = 42747600. Its totient is φ = 8792064.

The previous prime is 20109743. The next prime is 20109757. The reversal of 20109752 is 25790102.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20109757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3113 + ... + 7064.

Almost surely, 2^20109752 is an apocalyptic number.

It is an amenable number.

20109752 is an abundant number, since it is smaller than the sum of its proper divisors (22637848).

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

20109752 is a wasteful number, since it uses less digits than its factorization.

20109752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10215 (or 10211 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 20109752 is about 4484.3898135644. The cubic root of 20109752 is about 271.9373774520.

Adding to 20109752 its reverse (25790102), we get a palindrome (45899854).

The spelling of 20109752 in words is "twenty million, one hundred nine thousand, seven hundred fifty-two".