21268483 has 4 divisors (see below), whose sum is σ = 21278808. Its totient is φ = 21258160.

The previous prime is 21268469. The next prime is 21268493. The reversal of 21268483 is 38486212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21268483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21268453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 898 + ... + 6583.

It is an arithmetic number, because the mean of its divisors is an integer number (5319702).

Almost surely, 2^21268483 is an apocalyptic number.

21268483 is a deficient number, since it is larger than the sum of its proper divisors (10325).

21268483 is an equidigital number, since it uses as much as digits as its factorization.

21268483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10324.

The product of its digits is 18432, while the sum is 34.

The square root of 21268483 is about 4611.7765557321. The cubic root of 21268483 is about 277.0631950590.

It can be divided in two parts, 2126 and 8483, that added together give a square (10609 = 103²).

The spelling of 21268483 in words is "twenty-one million, two hundred sixty-eight thousand, four hundred eighty-three".