20495283 has 4 divisors (see below), whose sum is σ = 27327048. Its totient is φ = 13663520.

The previous prime is 20495269. The next prime is 20495287. The reversal of 20495283 is 38259402.

It is a happy number.

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 20495283 - 2²⁴ = 3718067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20495287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3415878 + ... + 3415883.

It is an arithmetic number, because the mean of its divisors is an integer number (6831762).

Almost surely, 2^20495283 is an apocalyptic number.

20495283 is a deficient number, since it is larger than the sum of its proper divisors (6831765).

20495283 is an equidigital number, since it uses as much as digits as its factorization.

20495283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6831764.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 20495283 is about 4527.1716335920. The cubic root of 20495283 is about 273.6641906986.

It can be divided in two parts, 20495 and 283, that multiplied together give a palindrome (5800085).

The spelling of 20495283 in words is "twenty million, four hundred ninety-five thousand, two hundred eighty-three".