28340156288 has 32 divisors (see below), whose sum is σ = 57415851000. Its totient is φ = 13929903616.

The previous prime is 28340156267. The next prime is 28340156297. The reversal of 28340156288 is 88265104382.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868783 + ... + 1883886.

Almost surely, 2^28340156288 is an apocalyptic number.

It is an amenable number.

28340156288 is an abundant number, since it is smaller than the sum of its proper divisors (29075694712).

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

28340156288 is an equidigital number, since it uses as much as digits as its factorization.

28340156288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752742 (or 3752730 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 28340156288 in words is "twenty-eight billion, three hundred forty million, one hundred fifty-six thousand, two hundred eighty-eight".