21793334 has 4 divisors (see below), whose sum is σ = 32690004. Its totient is φ = 10896666.

The previous prime is 21793319. The next prime is 21793349. The reversal of 21793334 is 43339712.

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

It is an interprime number because it is at equal distance from previous prime (21793319) and next prime (21793349).

It is a self number, because there is not a number n which added to its sum of digits gives 21793334.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5448332 + ... + 5448335.

It is an arithmetic number, because the mean of its divisors is an integer number (8172501).

Almost surely, 2^21793334 is an apocalyptic number.

21793334 is a deficient number, since it is larger than the sum of its proper divisors (10896670).

21793334 is a wasteful number, since it uses less digits than its factorization.

21793334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10896669.

The product of its digits is 13608, while the sum is 32.

The square root of 21793334 is about 4668.3331072236. Note that the first 3 decimals coincide. The cubic root of 21793334 is about 279.3237677961.

The spelling of 21793334 in words is "twenty-one million, seven hundred ninety-three thousand, three hundred thirty-four".