20748883 has 4 divisors (see below), whose sum is σ = 20838168. Its totient is φ = 20659600.

The previous prime is 20748881. The next prime is 20748887. The reversal of 20748883 is 38884702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20748883 - 2¹ = 20748881 is a prime.

It is a super-2 number, since 2×20748883² = 861032291495378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20748881) 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 3 ways as a sum of consecutive naturals, for example, 44293 + ... + 44758.

It is an arithmetic number, because the mean of its divisors is an integer number (5209542).

Almost surely, 2^20748883 is an apocalyptic number.

20748883 is a deficient number, since it is larger than the sum of its proper divisors (89285).

20748883 is an equidigital number, since it uses as much as digits as its factorization.

20748883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89284.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 20748883 is about 4555.0941812437. The cubic root of 20748883 is about 274.7883020883.

The spelling of 20748883 in words is "twenty million, seven hundred forty-eight thousand, eight hundred eighty-three".