28111264340 has 24 divisors (see below), whose sum is σ = 59084992512. Its totient is φ = 11234727200.

The previous prime is 28111264333. The next prime is 28111264373. The reversal of 28111264340 is 4346211182.

It is a junction number, because it is equal to n+sod(n) for n = 28111264297 and 28111264306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587564 + ... + 633603.

It is an arithmetic number, because the mean of its divisors is an integer number (2461874688).

Almost surely, 2^28111264340 is an apocalyptic number.

28111264340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28111264340 is an abundant number, since it is smaller than the sum of its proper divisors (30973728172).

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

28111264340 is a wasteful number, since it uses less digits than its factorization.

28111264340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222327 (or 1222325 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 28111264340 in words is "twenty-eight billion, one hundred eleven million, two hundred sixty-four thousand, three hundred forty".