21676113 has 16 divisors (see below), whose sum is σ = 32185600. Its totient is φ = 14418000.

The previous prime is 21676111. The next prime is 21676129. The reversal of 21676113 is 31167612.

It is not a de Polignac number, because 21676113 - 2¹ = 21676111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21676111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19743 + ... + 20811.

It is an arithmetic number, because the mean of its divisors is an integer number (2011600).

Almost surely, 2^21676113 is an apocalyptic number.

It is an amenable number.

21676113 is a deficient number, since it is larger than the sum of its proper divisors (10509487).

21676113 is a wasteful number, since it uses less digits than its factorization.

21676113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829 (or 1823 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 21676113 is about 4655.7612696529. The cubic root of 21676113 is about 278.8220625153.

The spelling of 21676113 in words is "twenty-one million, six hundred seventy-six thousand, one hundred thirteen".