21360994 has 8 divisors (see below), whose sum is σ = 33146460. Its totient is φ = 10312176.

The previous prime is 21360971. The next prime is 21361001. The reversal of 21360994 is 49906312.

It can be written as a sum of positive squares in 2 ways, for example, as 21279769 + 81225 = 4613^2 + 285^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184089 + ... + 184204.

Almost surely, 2^21360994 is an apocalyptic number.

21360994 is a deficient number, since it is larger than the sum of its proper divisors (11785466).

21360994 is a wasteful number, since it uses less digits than its factorization.

21360994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368324.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 21360994 is about 4621.7955385326. The cubic root of 21360994 is about 277.4643256903.

The spelling of 21360994 in words is "twenty-one million, three hundred sixty thousand, nine hundred ninety-four".