21793083 has 16 divisors (see below), whose sum is σ = 31395840. Its totient is φ = 13366944.

The previous prime is 21793069. The next prime is 21793091. The reversal of 21793083 is 38039712.

It is not a de Polignac number, because 21793083 - 2⁹ = 21792571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21793033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14208 + ... + 15666.

It is an arithmetic number, because the mean of its divisors is an integer number (1962240).

Almost surely, 2^21793083 is an apocalyptic number.

21793083 is a deficient number, since it is larger than the sum of its proper divisors (9602757).

21793083 is a wasteful number, since it uses less digits than its factorization.

21793083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 21793083 is about 4668.3062238889. The cubic root of 21793083 is about 279.3226954417.

The spelling of 21793083 in words is "twenty-one million, seven hundred ninety-three thousand, eighty-three".