21970883 has 8 divisors (see below), whose sum is σ = 24297456. Its totient is φ = 19699200.

The previous prime is 21970867. The next prime is 21970891. The reversal of 21970883 is 38807912.

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 21970883 - 2⁴ = 21970867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21973883) 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, 12878 + ... + 14483.

It is an arithmetic number, because the mean of its divisors is an integer number (3037182).

Almost surely, 2^21970883 is an apocalyptic number.

21970883 is a deficient number, since it is larger than the sum of its proper divisors (2326573).

21970883 is a wasteful number, since it uses less digits than its factorization.

21970883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27445.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 21970883 is about 4687.3108495170. The cubic root of 21970883 is about 280.0802618547.

The spelling of 21970883 in words is "twenty-one million, nine hundred seventy thousand, eight hundred eighty-three".