20247064 has 16 divisors (see below), whose sum is σ = 38013120. Its totient is φ = 10110240.

The previous prime is 20247053. The next prime is 20247067. The reversal of 20247064 is 46074202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20247067) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8377 + ... + 10519.

It is an arithmetic number, because the mean of its divisors is an integer number (2375820).

Almost surely, 2^20247064 is an apocalyptic number.

It is an amenable number.

20247064 is a deficient number, since it is larger than the sum of its proper divisors (17766056).

20247064 is a wasteful number, since it uses less digits than its factorization.

20247064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3330 (or 3326 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 20247064 is about 4499.6737659524. The cubic root of 20247064 is about 272.5549152855.

The spelling of 20247064 in words is "twenty million, two hundred forty-seven thousand, sixty-four".