28327830525840 has 40 divisors (see below), whose sum is σ = 87816274630848. Its totient is φ = 7554088140160.

The previous prime is 28327830525817. The next prime is 28327830525857. The reversal of 28327830525840 is 4852503872382.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59016313356 + ... + 59016313835.

Almost surely, 2^{28327830525840} is an apocalyptic number.

28327830525840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28327830525840 is an abundant number, since it is smaller than the sum of its proper divisors (59488444105008).

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

28327830525840 is a wasteful number, since it uses less digits than its factorization.

28327830525840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118032627207 (or 118032627201 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 57.

The spelling of 28327830525840 in words is "twenty-eight trillion, three hundred twenty-seven billion, eight hundred thirty million, five hundred twenty-five thousand, eight hundred forty".