20290682 has 8 divisors (see below), whose sum is σ = 30890496. Its totient is φ = 9993852.

The previous prime is 20290661. The next prime is 20290693. The reversal of 20290682 is 28609202.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75578 + ... + 75845.

It is an arithmetic number, because the mean of its divisors is an integer number (3861312).

Almost surely, 2^20290682 is an apocalyptic number.

20290682 is a deficient number, since it is larger than the sum of its proper divisors (10599814).

20290682 is a wasteful number, since it uses less digits than its factorization.

20290682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151492.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 20290682 is about 4504.5179542322. The cubic root of 20290682 is about 272.7504954703.

Adding to 20290682 its reverse (28609202), we get a palindrome (48899884).

The spelling of 20290682 in words is "twenty million, two hundred ninety thousand, six hundred eighty-two".