28867749580 has 12 divisors (see below), whose sum is σ = 60622274160. Its totient is φ = 11547099824.

The previous prime is 28867749577. The next prime is 28867749601. The reversal of 28867749580 is 8594776882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721693720 + ... + 721693759.

It is an arithmetic number, because the mean of its divisors is an integer number (5051856180).

Almost surely, 2^28867749580 is an apocalyptic number.

28867749580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28867749580 is an abundant number, since it is smaller than the sum of its proper divisors (31754524580).

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

28867749580 is a wasteful number, since it uses less digits than its factorization.

28867749580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443387488 (or 1443387486 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 64.

The spelling of 28867749580 in words is "twenty-eight billion, eight hundred sixty-seven million, seven hundred forty-nine thousand, five hundred eighty".