20882757 has 8 divisors (see below), whose sum is σ = 31821376. Its totient is φ = 11932992.

The previous prime is 20882731. The next prime is 20882759. The reversal of 20882757 is 75728802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20882757 - 2¹⁶ = 20817221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20882759) 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 7 ways as a sum of consecutive naturals, for example, 497188 + ... + 497229.

It is an arithmetic number, because the mean of its divisors is an integer number (3977672).

Almost surely, 2^20882757 is an apocalyptic number.

It is an amenable number.

20882757 is a deficient number, since it is larger than the sum of its proper divisors (10938619).

20882757 is an equidigital number, since it uses as much as digits as its factorization.

20882757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994427.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 20882757 is about 4569.7655300901. The cubic root of 20882757 is about 275.3780233702.

The spelling of 20882757 in words is "twenty million, eight hundred eighty-two thousand, seven hundred fifty-seven".