21046382 has 12 divisors (see below), whose sum is σ = 36723960. Its totient is φ = 9019836.

The previous prime is 21046367. The next prime is 21046387. The reversal of 21046382 is 28364012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21046387) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107282 + ... + 107477.

It is an arithmetic number, because the mean of its divisors is an integer number (3060330).

Almost surely, 2^21046382 is an apocalyptic number.

21046382 is a deficient number, since it is larger than the sum of its proper divisors (15677578).

21046382 is a wasteful number, since it uses less digits than its factorization.

21046382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214775 (or 214768 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 21046382 is about 4587.6335947850. The cubic root of 21046382 is about 276.0953864101.

The spelling of 21046382 in words is "twenty-one million, forty-six thousand, three hundred eighty-two".