21694083 has 8 divisors (see below), whose sum is σ = 30183168. Its totient is φ = 13833864.

The previous prime is 21694069. The next prime is 21694133. The reversal of 21694083 is 38049612.

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

It is not a de Polignac number, because 21694083 - 2⁹ = 21693571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21694583) 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, 157135 + ... + 157272.

It is an arithmetic number, because the mean of its divisors is an integer number (3772896).

Almost surely, 2^21694083 is an apocalyptic number.

21694083 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21694083 is a deficient number, since it is larger than the sum of its proper divisors (8489085).

21694083 is a wasteful number, since it uses less digits than its factorization.

21694083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314433.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 21694083 is about 4657.6907368352. The cubic root of 21694083 is about 278.8990912167.

The spelling of 21694083 in words is "twenty-one million, six hundred ninety-four thousand, eighty-three".