20907752 has 32 divisors (see below), whose sum is σ = 41901600. Its totient is φ = 9751104.

The previous prime is 20907751. The next prime is 20907763. The reversal of 20907752 is 25770902.

It is not an unprimeable number, because it can be changed into a prime (20907751) 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, 9158 + ... + 11210.

It is an arithmetic number, because the mean of its divisors is an integer number (1309425).

Almost surely, 2^20907752 is an apocalyptic number.

It is an amenable number.

20907752 is an abundant number, since it is smaller than the sum of its proper divisors (20993848).

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

20907752 is a wasteful number, since it uses less digits than its factorization.

20907752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145 (or 2141 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 20907752 is about 4572.4995352651. The cubic root of 20907752 is about 275.4878480987.

The spelling of 20907752 in words is "twenty million, nine hundred seven thousand, seven hundred fifty-two".