20733682 has 4 divisors (see below), whose sum is σ = 31100526. Its totient is φ = 10366840.

The previous prime is 20733677. The next prime is 20733689. The reversal of 20733682 is 28633702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20511841 + 221841 = 4529^2 + 471^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20733689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5183419 + ... + 5183422.

Almost surely, 2^20733682 is an apocalyptic number.

20733682 is a deficient number, since it is larger than the sum of its proper divisors (10366844).

20733682 is a wasteful number, since it uses less digits than its factorization.

20733682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10366843.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 20733682 is about 4553.4253040980. The cubic root of 20733682 is about 274.7211807649.

The spelling of 20733682 in words is "twenty million, seven hundred thirty-three thousand, six hundred eighty-two".