21238322 has 8 divisors (see below), whose sum is σ = 36408576. Its totient is φ = 9102132.

The previous prime is 21238307. The next prime is 21238351. The reversal of 21238322 is 22383212.

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

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, 758498 + ... + 758525.

It is an arithmetic number, because the mean of its divisors is an integer number (4551072).

Almost surely, 2^21238322 is an apocalyptic number.

21238322 is a deficient number, since it is larger than the sum of its proper divisors (15170254).

21238322 is a wasteful number, since it uses less digits than its factorization.

21238322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517032.

The product of its digits is 1152, while the sum is 23.

The square root of 21238322 is about 4608.5053976316. The cubic root of 21238322 is about 276.9321646155.

The spelling of 21238322 in words is "twenty-one million, two hundred thirty-eight thousand, three hundred twenty-two".