20336768 has 16 divisors (see below), whose sum is σ = 40514910. Its totient is φ = 10168320.

The previous prime is 20336747. The next prime is 20336809. The reversal of 20336768 is 86763302.

It can be written as a sum of positive squares in only one way, i.e., 19430464 + 906304 = 4408^2 + 952^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79313 + ... + 79568.

Almost surely, 2^20336768 is an apocalyptic number.

It is an amenable number.

20336768 is a deficient number, since it is larger than the sum of its proper divisors (20178142).

20336768 is an equidigital number, since it uses as much as digits as its factorization.

20336768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158895 (or 158883 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 20336768 is about 4509.6305835401. The cubic root of 20336768 is about 272.9568377155.

The spelling of 20336768 in words is "twenty million, three hundred thirty-six thousand, seven hundred sixty-eight".