20533752 has 24 divisors (see below), whose sum is σ = 55612440. Its totient is φ = 6844560.

The previous prime is 20533729. The next prime is 20533753. The reversal of 20533752 is 25733502.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20533753) 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 5 ways as a sum of consecutive naturals, for example, 142524 + ... + 142667.

It is an arithmetic number, because the mean of its divisors is an integer number (2317185).

Almost surely, 2^20533752 is an apocalyptic number.

It is an amenable number.

20533752 is an abundant number, since it is smaller than the sum of its proper divisors (35078688).

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

20533752 is a wasteful number, since it uses less digits than its factorization.

20533752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285203 (or 285196 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 20533752 is about 4531.4183210116. The cubic root of 20533752 is about 273.8353033714.

The spelling of 20533752 in words is "twenty million, five hundred thirty-three thousand, seven hundred fifty-two".