20502883 has 4 divisors (see below), whose sum is σ = 20791728. Its totient is φ = 20214040.

The previous prime is 20502877. The next prime is 20502887. The reversal of 20502883 is 38820502.

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 20502883 - 2²¹ = 18405731 is a prime.

It is a super-2 number, since 2×20502883² = 840736422623378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20502887) 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, 144316 + ... + 144457.

It is an arithmetic number, because the mean of its divisors is an integer number (5197932).

Almost surely, 2^20502883 is an apocalyptic number.

20502883 is a deficient number, since it is larger than the sum of its proper divisors (288845).

20502883 is an equidigital number, since it uses as much as digits as its factorization.

20502883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288844.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20502883 is about 4528.0109319656. The cubic root of 20502883 is about 273.6980129659.

The spelling of 20502883 in words is "twenty million, five hundred two thousand, eight hundred eighty-three".