28500593640 has 64 divisors (see below), whose sum is σ = 85559587200. Its totient is φ = 7595020032.

The previous prime is 28500593599. The next prime is 28500593647. The reversal of 28500593640 is 4639500582.

It is a junction number, because it is equal to n+sod(n) for n = 28500593592 and 28500593601.

It is not an unprimeable number, because it can be changed into a prime (28500593647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99621 + ... + 258699.

It is an arithmetic number, because the mean of its divisors is an integer number (1336868550).

Almost surely, 2^28500593640 is an apocalyptic number.

28500593640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28500593640 is an abundant number, since it is smaller than the sum of its proper divisors (57058993560).

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

28500593640 is a wasteful number, since it uses less digits than its factorization.

28500593640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160586 (or 160582 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 28500593640 in words is "twenty-eight billion, five hundred million, five hundred ninety-three thousand, six hundred forty".