21484306 has 8 divisors (see below), whose sum is σ = 32248944. Its totient is φ = 10734660.

The previous prime is 21484303. The next prime is 21484321. The reversal of 21484306 is 60348412.

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 (21484303) 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, 1081 + ... + 6643.

It is an arithmetic number, because the mean of its divisors is an integer number (4031118).

Almost surely, 2^21484306 is an apocalyptic number.

21484306 is a deficient number, since it is larger than the sum of its proper divisors (10764638).

21484306 is a wasteful number, since it uses less digits than its factorization.

21484306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7496.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 21484306 is about 4635.1166112623. The cubic root of 21484306 is about 277.9972137119.

The spelling of 21484306 in words is "twenty-one million, four hundred eighty-four thousand, three hundred six".