21360982 has 8 divisors (see below), whose sum is σ = 32123376. Its totient is φ = 10653192.

The previous prime is 21360971. The next prime is 21361001. The reversal of 21360982 is 28906312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12658 + ... + 14245.

It is an arithmetic number, because the mean of its divisors is an integer number (4015422).

Almost surely, 2^21360982 is an apocalyptic number.

21360982 is a deficient number, since it is larger than the sum of its proper divisors (10762394).

21360982 is a wasteful number, since it uses less digits than its factorization.

21360982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27302.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 21360982 is about 4621.7942403357. The cubic root of 21360982 is about 277.4642737331.

The spelling of 21360982 in words is "twenty-one million, three hundred sixty thousand, nine hundred eighty-two".