28570727 has 16 divisors (see below), whose sum is σ = 31298400. Its totient is φ = 25973760.

The previous prime is 28570673. The next prime is 28570733. The reversal of 28570727 is 72707582.

It is a cyclic number.

It is not a de Polignac number, because 28570727 - 2²⁰ = 27522151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28570627) 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, 124649 + ... + 124877.

It is an arithmetic number, because the mean of its divisors is an integer number (1956150).

Almost surely, 2^28570727 is an apocalyptic number.

28570727 is a deficient number, since it is larger than the sum of its proper divisors (2727673).

28570727 is a wasteful number, since it uses less digits than its factorization.

28570727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466.

The product of its (nonzero) digits is 54880, while the sum is 38.

The square root of 28570727 is about 5345.1592118477. The cubic root of 28570727 is about 305.7082064702.

The spelling of 28570727 in words is "twenty-eight million, five hundred seventy thousand, seven hundred twenty-seven".