28594065140 has 24 divisors (see below), whose sum is σ = 60082744680. Its totient is φ = 11430919808.

The previous prime is 28594065133. The next prime is 28594065151. The reversal of 28594065140 is 4156049582.

It can be written as a sum of positive squares in 4 ways, for example, as 4682391184 + 23911673956 = 68428^2 + 154634^2 .

It is a super-2 number, since 2×28594065140² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28594065091 and 28594065100.

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, 384107 + ... + 452466.

It is an arithmetic number, because the mean of its divisors is an integer number (2503447695).

Almost surely, 2^28594065140 is an apocalyptic number.

28594065140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28594065140 is an abundant number, since it is smaller than the sum of its proper divisors (31488679540).

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

28594065140 is a wasteful number, since it uses less digits than its factorization.

28594065140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838291 (or 838289 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 28594065140 in words is "twenty-eight billion, five hundred ninety-four million, sixty-five thousand, one hundred forty".