21468446 has 8 divisors (see below), whose sum is σ = 32222424. Its totient is φ = 10727640.

The previous prime is 21468443. The next prime is 21468449. The reversal of 21468446 is 64486412.

It is an interprime number because it is at equal distance from previous prime (21468443) and next prime (21468449).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21468443) by changing a digit.

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, 4136 + ... + 7748.

It is an arithmetic number, because the mean of its divisors is an integer number (4027803).

Almost surely, 2^21468446 is an apocalyptic number.

21468446 is a deficient number, since it is larger than the sum of its proper divisors (10753978).

21468446 is a wasteful number, since it uses less digits than its factorization.

21468446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6586.

The product of its digits is 36864, while the sum is 35.

The square root of 21468446 is about 4633.4054430840. The cubic root of 21468446 is about 277.9287897936.

The spelling of 21468446 in words is "twenty-one million, four hundred sixty-eight thousand, four hundred forty-six".