20982335 has 16 divisors (see below), whose sum is σ = 29084832. Its totient is φ = 14361600.

The previous prime is 20982331. The next prime is 20982337. The reversal of 20982335 is 53328902.

It is not a de Polignac number, because 20982335 - 2² = 20982331 is a prime.

It is a super-3 number, since 3×20982335³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20982331) 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 15 ways as a sum of consecutive naturals, for example, 10286 + ... + 12155.

It is an arithmetic number, because the mean of its divisors is an integer number (1817802).

Almost surely, 2^20982335 is an apocalyptic number.

20982335 is a deficient number, since it is larger than the sum of its proper divisors (8102497).

20982335 is a wasteful number, since it uses less digits than its factorization.

20982335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22474.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 20982335 is about 4580.6478799401. The cubic root of 20982335 is about 275.8150365786.

The spelling of 20982335 in words is "twenty million, nine hundred eighty-two thousand, three hundred thirty-five".