20132757 has 12 divisors (see below), whose sum is σ = 30083820. Its totient is φ = 12958848.

The previous prime is 20132713. The next prime is 20132803. The reversal of 20132757 is 75723102.

It can be written as a sum of positive squares in 2 ways, for example, as 15634116 + 4498641 = 3954^2 + 2121^2 .

It is not a de Polignac number, because 20132757 - 2¹⁹ = 19608469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20132757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130757) 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, 38308 + ... + 38829.

It is an arithmetic number, because the mean of its divisors is an integer number (2506985).

Almost surely, 2^20132757 is an apocalyptic number.

It is an amenable number.

20132757 is a deficient number, since it is larger than the sum of its proper divisors (9951063).

20132757 is a wasteful number, since it uses less digits than its factorization.

20132757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77172 (or 77169 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 20132757 is about 4486.9540893573. The cubic root of 20132757 is about 272.0410342144.

Adding to 20132757 its reverse (75723102), we get a palindrome (95855859).

The spelling of 20132757 in words is "twenty million, one hundred thirty-two thousand, seven hundred fifty-seven".