21482919 has 24 divisors (see below), whose sum is σ = 31917600. Its totient is φ = 13919040.

The previous prime is 21482899. The next prime is 21482927. The reversal of 21482919 is 91928412.

It is not a de Polignac number, because 21482919 - 2⁸ = 21482663 is a prime.

It is a super-2 number, since 2×21482919² = 923031617521122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21482959) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59662 + ... + 60020.

It is an arithmetic number, because the mean of its divisors is an integer number (1329900).

Almost surely, 2^21482919 is an apocalyptic number.

21482919 is a deficient number, since it is larger than the sum of its proper divisors (10434681).

21482919 is a wasteful number, since it uses less digits than its factorization.

21482919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535 (or 532 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 21482919 is about 4634.9669901737. The cubic root of 21482919 is about 277.9912311987.

The spelling of 21482919 in words is "twenty-one million, four hundred eighty-two thousand, nine hundred nineteen".