21482083 has 4 divisors (see below), whose sum is σ = 24550960. Its totient is φ = 18413208.

The previous prime is 21482081. The next prime is 21482093. The reversal of 21482083 is 38028412.

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

It is a cyclic number.

It is not a de Polignac number, because 21482083 - 2¹ = 21482081 is a prime.

It is a super-2 number, since 2×21482083² = 922959780037778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21482081) 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, 1534428 + ... + 1534441.

It is an arithmetic number, because the mean of its divisors is an integer number (6137740).

Almost surely, 2^21482083 is an apocalyptic number.

21482083 is a deficient number, since it is larger than the sum of its proper divisors (3068877).

21482083 is an equidigital number, since it uses as much as digits as its factorization.

21482083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068876.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 21482083 is about 4634.8768052668. The cubic root of 21482083 is about 277.9876251759.

The spelling of 21482083 in words is "twenty-one million, four hundred eighty-two thousand, eighty-three".