21482933 has 4 divisors (see below), whose sum is σ = 21522060. Its totient is φ = 21443808.

The previous prime is 21482927. The next prime is 21482941. The reversal of 21482933 is 33928412.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7360369 + 14122564 = 2713^2 + 3758^2 .

It is a cyclic number.

It is not a de Polignac number, because 21482933 - 2⁶ = 21482869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21482933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21482963) 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, 18728 + ... + 19841.

It is an arithmetic number, because the mean of its divisors is an integer number (5380515).

Almost surely, 2^21482933 is an apocalyptic number.

It is an amenable number.

21482933 is a deficient number, since it is larger than the sum of its proper divisors (39127).

21482933 is an equidigital number, since it uses as much as digits as its factorization.

21482933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39126.

The product of its digits is 10368, while the sum is 32.

The square root of 21482933 is about 4634.9685004323. The cubic root of 21482933 is about 277.9912915858.

The spelling of 21482933 in words is "twenty-one million, four hundred eighty-two thousand, nine hundred thirty-three".