28311077591328 has 96 divisors (see below), whose sum is σ = 84944297217024. Its totient is φ = 8087825555712.

The previous prime is 28311077591281. The next prime is 28311077591351. The reversal of 28311077591328 is 82319577011382.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×28311077591328² (a number of 28 digits) contains 22 as substring.

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, 2425351 + ... + 7905977.

It is an arithmetic number, because the mean of its divisors is an integer number (884836429344).

Almost surely, 2^{28311077591328} is an apocalyptic number.

28311077591328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28311077591328 is an abundant number, since it is smaller than the sum of its proper divisors (56633219625696).

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

28311077591328 is a wasteful number, since it uses less digits than its factorization.

28311077591328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5488334 (or 5488326 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 57.

The spelling of 28311077591328 in words is "twenty-eight trillion, three hundred eleven billion, seventy-seven million, five hundred ninety-one thousand, three hundred twenty-eight".