21482969 has 8 divisors (see below), whose sum is σ = 22329600. Its totient is φ = 20646000.

The previous prime is 21482963. The next prime is 21482987. The reversal of 21482969 is 96928412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-21482969 is a prime.

It is a super-2 number, since 2×21482969² = 923035914109922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 2294 + ... + 6944.

It is an arithmetic number, because the mean of its divisors is an integer number (2791200).

Almost surely, 2^21482969 is an apocalyptic number.

It is an amenable number.

21482969 is a deficient number, since it is larger than the sum of its proper divisors (846631).

21482969 is a wasteful number, since it uses less digits than its factorization.

21482969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4831.

The product of its digits is 62208, while the sum is 41.

The square root of 21482969 is about 4634.9723839522. The cubic root of 21482969 is about 277.9914468669.

The spelling of 21482969 in words is "twenty-one million, four hundred eighty-two thousand, nine hundred sixty-nine".