21833794 has 4 divisors (see below), whose sum is σ = 32750694. Its totient is φ = 10916896.

The previous prime is 21833767. The next prime is 21833807. The reversal of 21833794 is 49733812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16703569 + 5130225 = 4087^2 + 2265^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5458447 + ... + 5458450.

Almost surely, 2^21833794 is an apocalyptic number.

21833794 is a deficient number, since it is larger than the sum of its proper divisors (10916900).

21833794 is a wasteful number, since it uses less digits than its factorization.

21833794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10916899.

The product of its digits is 36288, while the sum is 37.

The square root of 21833794 is about 4672.6645503396. The cubic root of 21833794 is about 279.4965186783.

The spelling of 21833794 in words is "twenty-one million, eight hundred thirty-three thousand, seven hundred ninety-four".