21094604 has 6 divisors (see below), whose sum is σ = 36915564. Its totient is φ = 10547300.

The previous prime is 21094589. The next prime is 21094609. The reversal of 21094604 is 40649012.

It is not an unprimeable number, because it can be changed into a prime (21094609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2636822 + ... + 2636829.

It is an arithmetic number, because the mean of its divisors is an integer number (6152594).

Almost surely, 2^21094604 is an apocalyptic number.

It is an amenable number.

21094604 is a deficient number, since it is larger than the sum of its proper divisors (15820960).

21094604 is a wasteful number, since it uses less digits than its factorization.

21094604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5273655 (or 5273653 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 21094604 is about 4592.8862385215. The cubic root of 21094604 is about 276.3060911334.

The spelling of 21094604 in words is "twenty-one million, ninety-four thousand, six hundred four".