28575040671 has 12 divisors (see below), whose sum is σ = 43447430520. Its totient is φ = 18047394000.

The previous prime is 28575040667. The next prime is 28575040687. The reversal of 28575040671 is 17604057582.

28575040671 is a `hidden beast` number, since 2 + 8 + 575 + 0 + 4 + 0 + 6 + 71 = 666.

It is not a de Polignac number, because 28575040671 - 2² = 28575040667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28575040601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83552580 + ... + 83552921.

It is an arithmetic number, because the mean of its divisors is an integer number (3620619210).

Almost surely, 2^28575040671 is an apocalyptic number.

28575040671 is a deficient number, since it is larger than the sum of its proper divisors (14872389849).

28575040671 is a wasteful number, since it uses less digits than its factorization.

28575040671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167105526 (or 167105523 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The spelling of 28575040671 in words is "twenty-eight billion, five hundred seventy-five million, forty thousand, six hundred seventy-one".