21094316 has 12 divisors (see below), whose sum is σ = 36947232. Its totient is φ = 10537968.

The previous prime is 21094279. The next prime is 21094357. The reversal of 21094316 is 61349012.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

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, 7661 + ... + 10043.

It is an arithmetic number, because the mean of its divisors is an integer number (3078936).

Almost surely, 2^21094316 is an apocalyptic number.

It is an amenable number.

21094316 is a deficient number, since it is larger than the sum of its proper divisors (15852916).

21094316 is a wasteful number, since it uses less digits than its factorization.

21094316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4600 (or 4598 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 21094316 is about 4592.8548855804. The cubic root of 21094316 is about 276.3048336788.

The spelling of 21094316 in words is "twenty-one million, ninety-four thousand, three hundred sixteen".