20512682 has 4 divisors (see below), whose sum is σ = 30769026. Its totient is φ = 10256340.

The previous prime is 20512673. The next prime is 20512691. The reversal of 20512682 is 28621502.

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

It is an interprime number because it is at equal distance from previous prime (20512673) and next prime (20512691).

It can be written as a sum of positive squares in only one way, i.e., 20511841 + 841 = 4529^2 + 29^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5128169 + ... + 5128172.

Almost surely, 2^20512682 is an apocalyptic number.

20512682 is a deficient number, since it is larger than the sum of its proper divisors (10256344).

20512682 is a wasteful number, since it uses less digits than its factorization.

20512682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10256343.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 20512682 is about 4529.0928451512. The cubic root of 20512682 is about 273.7416091060.

The spelling of 20512682 in words is "twenty million, five hundred twelve thousand, six hundred eighty-two".