21079083 has 8 divisors (see below), whose sum is σ = 28224000. Its totient is φ = 13993448.

The previous prime is 21079081. The next prime is 21079087. The reversal of 21079083 is 38097012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21079083 - 2¹ = 21079081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21079083.

It is not an unprimeable number, because it can be changed into a prime (21079081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13983 + ... + 15416.

It is an arithmetic number, because the mean of its divisors is an integer number (3528000).

Almost surely, 2^21079083 is an apocalyptic number.

21079083 is a deficient number, since it is larger than the sum of its proper divisors (7144917).

21079083 is a wasteful number, since it uses less digits than its factorization.

21079083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29641.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 21079083 is about 4591.1962493450. The cubic root of 21079083 is about 276.2383076206.

The spelling of 21079083 in words is "twenty-one million, seventy-nine thousand, eighty-three".