21832045 has 16 divisors (see below), whose sum is σ = 27936000. Its totient is φ = 16331328.

The previous prime is 21832009. The next prime is 21832051. The reversal of 21832045 is 54023812.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21832045 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6051 + ... + 8959.

It is an arithmetic number, because the mean of its divisors is an integer number (1746000).

Almost surely, 2^21832045 is an apocalyptic number.

It is an amenable number.

21832045 is a deficient number, since it is larger than the sum of its proper divisors (6103955).

21832045 is a wasteful number, since it uses less digits than its factorization.

21832045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 21832045 is about 4672.4773942738. The cubic root of 21832045 is about 279.4890554394.

Adding to 21832045 its reverse (54023812), we get a palindrome (75855857).

The spelling of 21832045 in words is "twenty-one million, eight hundred thirty-two thousand, forty-five".