20287083 has 4 divisors (see below), whose sum is σ = 27049448. Its totient is φ = 13524720.

The previous prime is 20287073. The next prime is 20287133. The reversal of 20287083 is 38078202.

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

It is not a de Polignac number, because 20287083 - 2⁴ = 20287067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20287083.

It is not an unprimeable number, because it can be changed into a prime (20287073) 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, 3381178 + ... + 3381183.

It is an arithmetic number, because the mean of its divisors is an integer number (6762362).

Almost surely, 2^20287083 is an apocalyptic number.

20287083 is a deficient number, since it is larger than the sum of its proper divisors (6762365).

20287083 is an equidigital number, since it uses as much as digits as its factorization.

20287083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6762364.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 20287083 is about 4504.1184487089. The cubic root of 20287083 is about 272.7343684113.

The spelling of 20287083 in words is "twenty million, two hundred eighty-seven thousand, eighty-three".