20287887796 has 48 divisors (see below), whose sum is σ = 39402381312. Its totient is φ = 9063381600.

The previous prime is 20287887791. The next prime is 20287887803. The reversal of 20287887796 is 69778878202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20287887791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580951 + ... + 614881.

It is an arithmetic number, because the mean of its divisors is an integer number (820882944).

Almost surely, 2^20287887796 is an apocalyptic number.

It is an amenable number.

20287887796 is a deficient number, since it is larger than the sum of its proper divisors (19114493516).

20287887796 is a wasteful number, since it uses less digits than its factorization.

20287887796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34180 (or 34178 counting only the distinct ones).

The product of its (nonzero) digits is 37933056, while the sum is 64.

The spelling of 20287887796 in words is "twenty billion, two hundred eighty-seven million, eight hundred eighty-seven thousand, seven hundred ninety-six".