28057730535 has 40 divisors (see below), whose sum is σ = 50629276896. Its totient is φ = 14864990400.

The previous prime is 28057730527. The next prime is 28057730557. The reversal of 28057730535 is 53503775082.

28057730535 is a `hidden beast` number, since 2 + 80 + 5 + 7 + 7 + 30 + 535 = 666.

It is not a de Polignac number, because 28057730535 - 2³ = 28057730527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 168244 + ... + 290553.

Almost surely, 2^28057730535 is an apocalyptic number.

28057730535 is a deficient number, since it is larger than the sum of its proper divisors (22571546361).

28057730535 is a wasteful number, since it uses less digits than its factorization.

28057730535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458965 (or 458956 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 45.

The spelling of 28057730535 in words is "twenty-eight billion, fifty-seven million, seven hundred thirty thousand, five hundred thirty-five".