20296757 has 8 divisors (see below), whose sum is σ = 22449336. Its totient is φ = 18228672.

The previous prime is 20296739. The next prime is 20296777. The reversal of 20296757 is 75769202.

It can be written as a sum of positive squares in 4 ways, for example, as 707281 + 19589476 = 841^2 + 4426^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20296757 - 2¹⁰ = 20295733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20296757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20296777) 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, 20618 + ... + 21579.

It is an arithmetic number, because the mean of its divisors is an integer number (2806167).

Almost surely, 2^20296757 is an apocalyptic number.

It is an amenable number.

20296757 is a deficient number, since it is larger than the sum of its proper divisors (2152579).

20296757 is a wasteful number, since it uses less digits than its factorization.

20296757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42247.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 20296757 is about 4505.1922267535. The cubic root of 20296757 is about 272.7777131184. Note that the first 4 decimals are identical.

The spelling of 20296757 in words is "twenty million, two hundred ninety-six thousand, seven hundred fifty-seven".