28641605312 has 28 divisors (see below), whose sum is σ = 58669098816. Its totient is φ = 13858840320.

The previous prime is 28641605273. The next prime is 28641605323. The reversal of 28641605312 is 21350614682.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7216163 + ... + 7220130.

Almost surely, 2^28641605312 is an apocalyptic number.

It is an amenable number.

28641605312 is an abundant number, since it is smaller than the sum of its proper divisors (30027493504).

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

28641605312 is a wasteful number, since it uses less digits than its factorization.

28641605312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14436336 (or 14436326 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 28641605312 in words is "twenty-eight billion, six hundred forty-one million, six hundred five thousand, three hundred twelve".