21082083 has 32 divisors (see below), whose sum is σ = 31933440. Its totient is φ = 12260640.

The previous prime is 21082063. The next prime is 21082093. The reversal of 21082083 is 38028012.

It is not a de Polignac number, because 21082083 - 2¹³ = 21073891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21082003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117688 + ... + 117866.

It is an arithmetic number, because the mean of its divisors is an integer number (997920).

Almost surely, 2^21082083 is an apocalyptic number.

21082083 is a deficient number, since it is larger than the sum of its proper divisors (10851357).

21082083 is a wasteful number, since it uses less digits than its factorization.

21082083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 21082083 is about 4591.5229499590. The cubic root of 21082083 is about 276.2514118530.

The spelling of 21082083 in words is "twenty-one million, eighty-two thousand, eighty-three".