20982199 has 8 divisors (see below), whose sum is σ = 25390368. Its totient is φ = 16926720.

The previous prime is 20982193. The next prime is 20982211. The reversal of 20982199 is 99128902.

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

It is a cyclic number.

It is not a de Polignac number, because 20982199 - 2³ = 20982191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20982191) 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 7 ways as a sum of consecutive naturals, for example, 88042 + ... + 88279.

It is an arithmetic number, because the mean of its divisors is an integer number (3173796).

Almost surely, 2^20982199 is an apocalyptic number.

20982199 is a deficient number, since it is larger than the sum of its proper divisors (4408169).

20982199 is a wasteful number, since it uses less digits than its factorization.

20982199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176345.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 20982199 is about 4580.6330348545. The cubic root of 20982199 is about 275.8144406658.

The spelling of 20982199 in words is "twenty million, nine hundred eighty-two thousand, one hundred ninety-nine".