20287146760 has 32 divisors (see below), whose sum is σ = 46271375640. Its totient is φ = 8003695104.

The previous prime is 20287146721. The next prime is 20287146793. The reversal of 20287146760 is 6764178202.

It can be written as a sum of positive squares in 4 ways, for example, as 15910795044 + 4376351716 = 126138^2 + 66154^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3470907 + ... + 3476746.

Almost surely, 2^20287146760 is an apocalyptic number.

20287146760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20287146760 is an abundant number, since it is smaller than the sum of its proper divisors (25984228880).

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

20287146760 is a wasteful number, since it uses less digits than its factorization.

20287146760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6947737 (or 6947733 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 20287146760 in words is "twenty billion, two hundred eighty-seven million, one hundred forty-six thousand, seven hundred sixty".