20768016 has 80 divisors (see below), whose sum is σ = 58710528. Its totient is φ = 6297600.

The previous prime is 20768009. The next prime is 20768021. The reversal of 20768016 is 61086702.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 24886 + ... + 25706.

Almost surely, 2^20768016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20768016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29355264).

20768016 is an abundant number, since it is smaller than the sum of its proper divisors (37942512).

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

20768016 is a wasteful number, since it uses less digits than its factorization.

20768016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20768016 is about 4557.1938734269. The cubic root of 20768016 is about 274.8727389129.

The spelling of 20768016 in words is "twenty million, seven hundred sixty-eight thousand, sixteen".