20717368 has 32 divisors (see below), whose sum is σ = 45928800. Its totient is φ = 8572032.

The previous prime is 20717261. The next prime is 20717377. The reversal of 20717368 is 86371702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4755 + ... + 8002.

It is an arithmetic number, because the mean of its divisors is an integer number (1435275).

Almost surely, 2^20717368 is an apocalyptic number.

20717368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20717368 is an abundant number, since it is smaller than the sum of its proper divisors (25211432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20717368 is a wasteful number, since it uses less digits than its factorization.

20717368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12799 (or 12795 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 20717368 is about 4551.6335529126. The cubic root of 20717368 is about 274.6491083863.

The spelling of 20717368 in words is "twenty million, seven hundred seventeen thousand, three hundred sixty-eight".