28331877306 has 32 divisors (see below), whose sum is σ = 61932307968. Its totient is φ = 8601707520.

The previous prime is 28331877257. The next prime is 28331877317. The reversal of 28331877306 is 60377813382.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4476895 + ... + 4483218.

It is an arithmetic number, because the mean of its divisors is an integer number (1935384624).

Almost surely, 2^28331877306 is an apocalyptic number.

28331877306 is an abundant number, since it is smaller than the sum of its proper divisors (33600430662).

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

28331877306 is a wasteful number, since it uses less digits than its factorization.

28331877306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8960166.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 28331877306 in words is "twenty-eight billion, three hundred thirty-one million, eight hundred seventy-seven thousand, three hundred six".