20512246 has 8 divisors (see below), whose sum is σ = 30957624. Its totient is φ = 10193040.

The previous prime is 20512243. The next prime is 20512249. The reversal of 20512246 is 64221502.

It is an interprime number because it is at equal distance from previous prime (20512243) and next prime (20512249).

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 (20512241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31135 + ... + 31786.

It is an arithmetic number, because the mean of its divisors is an integer number (3869703).

Almost surely, 2^20512246 is an apocalyptic number.

20512246 is a deficient number, since it is larger than the sum of its proper divisors (10445378).

20512246 is a wasteful number, since it uses less digits than its factorization.

20512246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63086.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20512246 is about 4529.0447116362. The cubic root of 20512246 is about 273.7396696198.

Adding to 20512246 its reverse (64221502), we get a palindrome (84733748).

The spelling of 20512246 in words is "twenty million, five hundred twelve thousand, two hundred forty-six".