21446483 has 4 divisors (see below), whose sum is σ = 21511608. Its totient is φ = 21381360.

The previous prime is 21446471. The next prime is 21446489. The reversal of 21446483 is 38464412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21446483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21446489) 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, 32066 + ... + 32727.

It is an arithmetic number, because the mean of its divisors is an integer number (5377902).

Almost surely, 2^21446483 is an apocalyptic number.

21446483 is a deficient number, since it is larger than the sum of its proper divisors (65125).

21446483 is an equidigital number, since it uses as much as digits as its factorization.

21446483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65124.

The product of its digits is 18432, while the sum is 32.

The square root of 21446483 is about 4631.0347655789. The cubic root of 21446483 is about 277.8339803730.

The spelling of 21446483 in words is "twenty-one million, four hundred forty-six thousand, four hundred eighty-three".