20730682 has 16 divisors (see below), whose sum is σ = 37084032. Its totient is φ = 8498160.

The previous prime is 20730623. The next prime is 20730719. The reversal of 20730682 is 28603702.

It is a super-2 number, since 2×20730682² = 859522352370248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20730682.

It is an unprimeable number.

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, 31869 + ... + 32512.

It is an arithmetic number, because the mean of its divisors is an integer number (2317752).

Almost surely, 2^20730682 is an apocalyptic number.

20730682 is a deficient number, since it is larger than the sum of its proper divisors (16353350).

20730682 is a wasteful number, since it uses less digits than its factorization.

20730682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64413.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20730682 is about 4553.0958698450. The cubic root of 20730682 is about 274.7079301309.

It can be divided in two parts, 20730 and 682, that added together give a palindrome (21412).

The spelling of 20730682 in words is "twenty million, seven hundred thirty thousand, six hundred eighty-two".