20312246 has 8 divisors (see below), whose sum is σ = 32260680. Its totient is φ = 9558688.

The previous prime is 20312239. The next prime is 20312249. The reversal of 20312246 is 64221302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298676 + ... + 298743.

It is an arithmetic number, because the mean of its divisors is an integer number (4032585).

Almost surely, 2^20312246 is an apocalyptic number.

20312246 is a deficient number, since it is larger than the sum of its proper divisors (11948434).

20312246 is a wasteful number, since it uses less digits than its factorization.

20312246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597438.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20312246 is about 4506.9109154719. The cubic root of 20312246 is about 272.8470834732.

Adding to 20312246 its reverse (64221302), we get a palindrome (84533548).

The spelling of 20312246 in words is "twenty million, three hundred twelve thousand, two hundred forty-six".