21383675 has 12 divisors (see below), whose sum is σ = 27669360. Its totient is φ = 16362720.

The previous prime is 21383651. The next prime is 21383699. The reversal of 21383675 is 57638312.

It is an interprime number because it is at equal distance from previous prime (21383651) and next prime (21383699).

It is not a de Polignac number, because 21383675 - 2⁸ = 21383419 is a prime.

It is a super-3 number, since 3×21383675³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18020 + ... + 19169.

It is an arithmetic number, because the mean of its divisors is an integer number (2305780).

Almost surely, 2^21383675 is an apocalyptic number.

21383675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21383675 is a deficient number, since it is larger than the sum of its proper divisors (6285685).

21383675 is a wasteful number, since it uses less digits than its factorization.

21383675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37222 (or 37217 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 21383675 is about 4624.2485876086. The cubic root of 21383675 is about 277.5624943793.

The spelling of 21383675 in words is "twenty-one million, three hundred eighty-three thousand, six hundred seventy-five".