20812752 has 60 divisors (see below), whose sum is σ = 61320480. Its totient is φ = 6571584.

The previous prime is 20812751. The next prime is 20812793. The reversal of 20812752 is 25721802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20812751) 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, 1068 + ... + 6539.

It is an arithmetic number, because the mean of its divisors is an integer number (1022008).

Almost surely, 2^20812752 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 20812752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30660240).

20812752 is an abundant number, since it is smaller than the sum of its proper divisors (40507728).

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

20812752 is a wasteful number, since it uses less digits than its factorization.

20812752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7640 (or 7631 counting only the distinct ones).

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

The square root of 20812752 is about 4562.0995166699. The cubic root of 20812752 is about 275.0699634661.

The spelling of 20812752 in words is "twenty million, eight hundred twelve thousand, seven hundred fifty-two".