21382627 has 8 divisors (see below), whose sum is σ = 24579936. Its totient is φ = 18220992.

The previous prime is 21382597. The next prime is 21382661. The reversal of 21382627 is 72628312.

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 21382627 - 2⁷ = 21382499 is a prime.

It is a super-2 number, since 2×21382627² = 914433474842258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21382667) 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, 7618 + ... + 10039.

It is an arithmetic number, because the mean of its divisors is an integer number (3072492).

Almost surely, 2^21382627 is an apocalyptic number.

21382627 is a deficient number, since it is larger than the sum of its proper divisors (3197309).

21382627 is a wasteful number, since it uses less digits than its factorization.

21382627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17837.

The product of its digits is 8064, while the sum is 31.

The square root of 21382627 is about 4624.1352705127. The cubic root of 21382627 is about 277.5579599195.

The spelling of 21382627 in words is "twenty-one million, three hundred eighty-two thousand, six hundred twenty-seven".