20304752 has 80 divisors (see below), whose sum is σ = 45330432. Its totient is φ = 8743680.

The previous prime is 20304751. The next prime is 20304763. The reversal of 20304752 is 25740302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20304751) 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 15 ways as a sum of consecutive naturals, for example, 303023 + ... + 303089.

Almost surely, 2^20304752 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 20304752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22665216).

20304752 is an abundant number, since it is smaller than the sum of its proper divisors (25025680).

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

20304752 is a wasteful number, since it uses less digits than its factorization.

20304752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 20304752 is about 4506.0794489223. The cubic root of 20304752 is about 272.8135246116.

The spelling of 20304752 in words is "twenty million, three hundred four thousand, seven hundred fifty-two".