21832075 has 12 divisors (see below), whose sum is σ = 27129960. Its totient is φ = 17428160.

The previous prime is 21832051. The next prime is 21832079. The reversal of 21832075 is 57023812.

It is not a de Polignac number, because 21832075 - 2¹¹ = 21830027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21832079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20916 + ... + 21934.

It is an arithmetic number, because the mean of its divisors is an integer number (2260830).

Almost surely, 2^21832075 is an apocalyptic number.

21832075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21832075 is a deficient number, since it is larger than the sum of its proper divisors (5297885).

21832075 is a wasteful number, since it uses less digits than its factorization.

21832075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886 (or 1881 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 21832075 is about 4672.4806045611. The cubic root of 21832075 is about 279.4891834571.

Adding to 21832075 its reverse (57023812), we get a palindrome (78855887).

The spelling of 21832075 in words is "twenty-one million, eight hundred thirty-two thousand, seventy-five".