20368816 has 20 divisors (see below), whose sum is σ = 42500752. Its totient is φ = 9400896.

The previous prime is 20368811. The next prime is 20368819. The reversal of 20368816 is 61886302.

It is not an unprimeable number, because it can be changed into a prime (20368811) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 48756 + ... + 49171.

Almost surely, 2^20368816 is an apocalyptic number.

20368816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20368816 is an abundant number, since it is smaller than the sum of its proper divisors (22131936).

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

20368816 is a wasteful number, since it uses less digits than its factorization.

20368816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97948 (or 97942 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 20368816 is about 4513.1824691674. The cubic root of 20368816 is about 273.1001435033.

The spelling of 20368816 in words is "twenty million, three hundred sixty-eight thousand, eight hundred sixteen".