20239752 has 32 divisors (see below), whose sum is σ = 54492480. Its totient is φ = 6227520.

The previous prime is 20239733. The next prime is 20239763. The reversal of 20239752 is 25793202.

It is a happy number.

It is a super-2 number, since 2×20239752² = 819295122043008, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32124 + ... + 32747.

It is an arithmetic number, because the mean of its divisors is an integer number (1702890).

Almost surely, 2^20239752 is an apocalyptic number.

It is an amenable number.

20239752 is an abundant number, since it is smaller than the sum of its proper divisors (34252728).

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

20239752 is a wasteful number, since it uses less digits than its factorization.

20239752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64893 (or 64889 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 20239752 is about 4498.8611892344. The cubic root of 20239752 is about 272.5221012852.

The spelling of 20239752 in words is "twenty million, two hundred thirty-nine thousand, seven hundred fifty-two".