21364883 has 8 divisors (see below), whose sum is σ = 21838896. Its totient is φ = 20893600.

The previous prime is 21364877. The next prime is 21364897. The reversal of 21364883 is 38846312.

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 21364883 - 2⁸ = 21364627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21364853) 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, 25613 + ... + 26433.

It is an arithmetic number, because the mean of its divisors is an integer number (2729862).

Almost surely, 2^21364883 is an apocalyptic number.

21364883 is a deficient number, since it is larger than the sum of its proper divisors (474013).

21364883 is an equidigital number, since it uses as much as digits as its factorization.

21364883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365.

The product of its digits is 27648, while the sum is 35.

The square root of 21364883 is about 4622.2162433188. The cubic root of 21364883 is about 277.4811631290.

The spelling of 21364883 in words is "twenty-one million, three hundred sixty-four thousand, eight hundred eighty-three".