21794446 has 8 divisors (see below), whose sum is σ = 33227784. Its totient is φ = 10718520.

The previous prime is 21794431. The next prime is 21794447. The reversal of 21794446 is 64449712.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21794447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89200 + ... + 89443.

It is an arithmetic number, because the mean of its divisors is an integer number (4153473).

Almost surely, 2^21794446 is an apocalyptic number.

21794446 is a deficient number, since it is larger than the sum of its proper divisors (11433338).

21794446 is a wasteful number, since it uses less digits than its factorization.

21794446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178706.

The product of its digits is 48384, while the sum is 37.

The square root of 21794446 is about 4668.4522060315. The cubic root of 21794446 is about 279.3285185262.

The spelling of 21794446 in words is "twenty-one million, seven hundred ninety-four thousand, four hundred forty-six".