21791482 has 8 divisors (see below), whose sum is σ = 33175296. Its totient is φ = 10733052.

The previous prime is 21791479. The next prime is 21791489. The reversal of 21791482 is 28419712.

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

It is not an unprimeable number, because it can be changed into a prime (21791489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81178 + ... + 81445.

It is an arithmetic number, because the mean of its divisors is an integer number (4146912).

Almost surely, 2^21791482 is an apocalyptic number.

21791482 is a deficient number, since it is larger than the sum of its proper divisors (11383814).

21791482 is a wasteful number, since it uses less digits than its factorization.

21791482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162692.

The product of its digits is 8064, while the sum is 34.

The square root of 21791482 is about 4668.1347452703. The cubic root of 21791482 is about 279.3158552501.

The spelling of 21791482 in words is "twenty-one million, seven hundred ninety-one thousand, four hundred eighty-two".