28757841288 has 32 divisors (see below), whose sum is σ = 78430476960. Its totient is φ = 8714497280.

The previous prime is 28757841251. The next prime is 28757841289. The reversal of 28757841288 is 88214875782.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28757841289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54465345 + ... + 54465872.

It is an arithmetic number, because the mean of its divisors is an integer number (2450952405).

Almost surely, 2^28757841288 is an apocalyptic number.

It is an amenable number.

28757841288 is an abundant number, since it is smaller than the sum of its proper divisors (49672635672).

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

28757841288 is a wasteful number, since it uses less digits than its factorization.

28757841288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108931237 (or 108931233 counting only the distinct ones).

The product of its digits is 16056320, while the sum is 60.

The spelling of 28757841288 in words is "twenty-eight billion, seven hundred fifty-seven million, eight hundred forty-one thousand, two hundred eighty-eight".