20832639 has 8 divisors (see below), whose sum is σ = 27835392. Its totient is φ = 13859160.

The previous prime is 20832629. The next prime is 20832653. The reversal of 20832639 is 93623802.

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

It is not a de Polignac number, because 20832639 - 2¹¹ = 20830591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20832629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5599 + ... + 8544.

It is an arithmetic number, because the mean of its divisors is an integer number (3479424).

Almost surely, 2^20832639 is an apocalyptic number.

20832639 is a deficient number, since it is larger than the sum of its proper divisors (7002753).

20832639 is a wasteful number, since it uses less digits than its factorization.

20832639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14637.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 20832639 is about 4564.2785848368. The cubic root of 20832639 is about 275.1575471897.

The spelling of 20832639 in words is "twenty million, eight hundred thirty-two thousand, six hundred thirty-nine".