28806761730280 has 64 divisors (see below), whose sum is σ = 64839643506000. Its totient is φ = 11518362599424.

The previous prime is 28806761730277. The next prime is 28806761730289. The reversal of 28806761730280 is 8203716760882.

It can be written as a sum of positive squares in 8 ways, for example, as 12321911226564 + 16484850503716 = 3510258^2 + 4060154^2 .

It is not an unprimeable number, because it can be changed into a prime (28806761730289) 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, 2101296066 + ... + 2101309774.

Almost surely, 2^{28806761730280} is an apocalyptic number.

28806761730280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28806761730280 is an abundant number, since it is smaller than the sum of its proper divisors (36032881775720).

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

28806761730280 is a wasteful number, since it uses less digits than its factorization.

28806761730280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29686 (or 29682 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 58.

The spelling of 28806761730280 in words is "twenty-eight trillion, eight hundred six billion, seven hundred sixty-one million, seven hundred thirty thousand, two hundred eighty".