20244656 has 30 divisors (see below), whose sum is σ = 39942756. Its totient is φ = 9940000.

The previous prime is 20244647. The next prime is 20244667. The reversal of 20244656 is 65644202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80531 + ... + 80781.

Almost surely, 2^20244656 is an apocalyptic number.

It is an amenable number.

20244656 is a deficient number, since it is larger than the sum of its proper divisors (19698100).

20244656 is an equidigital number, since it uses as much as digits as its factorization.

20244656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 20244656 is about 4499.4061830424. The cubic root of 20244656 is about 272.5441097969.

Adding to 20244656 its reverse (65644202), we get a palindrome (85888858).

The spelling of 20244656 in words is "twenty million, two hundred forty-four thousand, six hundred fifty-six".