28618729000 has 32 divisors (see below), whose sum is σ = 66967828200. Its totient is φ = 11447491200.

The previous prime is 28618728997. The next prime is 28618729019. The reversal of 28618729000 is 92781682.

It can be written as a sum of positive squares in 4 ways, for example, as 10382387236 + 18236341764 = 101894^2 + 135042^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14308365 + ... + 14310364.

Almost surely, 2^28618729000 is an apocalyptic number.

28618729000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28618729000 is an abundant number, since it is smaller than the sum of its proper divisors (38349099200).

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

28618729000 is a wasteful number, since it uses less digits than its factorization.

28618729000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28618750 (or 28618736 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 28618729000 in words is "twenty-eight billion, six hundred eighteen million, seven hundred twenty-nine thousand".