21133046 has 8 divisors (see below), whose sum is σ = 34581384. Its totient is φ = 9605920.

The previous prime is 21133027. The next prime is 21133087. The reversal of 21133046 is 64033112.

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

It is a Curzon number.

It is a congruent number.

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, 480275 + ... + 480318.

It is an arithmetic number, because the mean of its divisors is an integer number (4322673).

Almost surely, 2^21133046 is an apocalyptic number.

21133046 is a deficient number, since it is larger than the sum of its proper divisors (13448338).

21133046 is a wasteful number, since it uses less digits than its factorization.

21133046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960606.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 21133046 is about 4597.0692837938. The cubic root of 21133046 is about 276.4738324991.

Adding to 21133046 its reverse (64033112), we get a palindrome (85166158).

The spelling of 21133046 in words is "twenty-one million, one hundred thirty-three thousand, forty-six".