20752812 has 36 divisors (see below), whose sum is σ = 52678080. Its totient is φ = 6888672.

The previous prime is 20752811. The next prime is 20752817. The reversal of 20752812 is 21825702.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (20752811) 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 11 ways as a sum of consecutive naturals, for example, 8613 + ... + 10755.

It is an arithmetic number, because the mean of its divisors is an integer number (1463280).

Almost surely, 2^20752812 is an apocalyptic number.

It is an amenable number.

20752812 is an abundant number, since it is smaller than the sum of its proper divisors (31925268).

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

20752812 is a wasteful number, since it uses less digits than its factorization.

20752812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422 (or 2417 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 20752812 is about 4555.5254362148. The cubic root of 20752812 is about 274.8056455938.

The spelling of 20752812 in words is "twenty million, seven hundred fifty-two thousand, eight hundred twelve".