21832653 has 8 divisors (see below), whose sum is σ = 30642400. Its totient is φ = 13789008.

The previous prime is 21832651. The next prime is 21832667. The reversal of 21832653 is 35623812.

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

It is not a de Polignac number, because 21832653 - 2¹ = 21832651 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 21832653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21832651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191458 + ... + 191571.

It is an arithmetic number, because the mean of its divisors is an integer number (3830300).

Almost surely, 2^21832653 is an apocalyptic number.

It is an amenable number.

21832653 is a deficient number, since it is larger than the sum of its proper divisors (8809747).

21832653 is a wasteful number, since it uses less digits than its factorization.

21832653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383051.

The product of its digits is 8640, while the sum is 30.

The square root of 21832653 is about 4672.5424556659. The cubic root of 21832653 is about 279.4916499095.

It can be divided in two parts, 2 and 1832653, that added together give a triangular number (1832655 = T₁₉₁₄).

The spelling of 21832653 in words is "twenty-one million, eight hundred thirty-two thousand, six hundred fifty-three".