21433294 has 8 divisors (see below), whose sum is σ = 34041168. Its totient is φ = 10086240.

The previous prime is 21433289. The next prime is 21433319. The reversal of 21433294 is 49233412.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315162 + ... + 315229.

It is an arithmetic number, because the mean of its divisors is an integer number (4255146).

Almost surely, 2^21433294 is an apocalyptic number.

21433294 is a deficient number, since it is larger than the sum of its proper divisors (12607874).

21433294 is a wasteful number, since it uses less digits than its factorization.

21433294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630410.

The product of its digits is 5184, while the sum is 28.

The square root of 21433294 is about 4629.6105667756. The cubic root of 21433294 is about 277.7770152631. Note that the first 3 decimals are identical.

The spelling of 21433294 in words is "twenty-one million, four hundred thirty-three thousand, two hundred ninety-four".