28605157 has 16 divisors (see below), whose sum is σ = 34315264. Its totient is φ = 23328000.

The previous prime is 28605149. The next prime is 28605163. The reversal of 28605157 is 75150682.

It is a cyclic number.

It is not a de Polignac number, because 28605157 - 2³ = 28605149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28605257) 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, 12157 + ... + 14317.

It is an arithmetic number, because the mean of its divisors is an integer number (2144704).

Almost surely, 2^28605157 is an apocalyptic number.

It is an amenable number.

28605157 is a deficient number, since it is larger than the sum of its proper divisors (5710107).

28605157 is a wasteful number, since it uses less digits than its factorization.

28605157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 28605157 is about 5348.3789132783. The cubic root of 28605157 is about 305.8309580817.

The spelling of 28605157 in words is "twenty-eight million, six hundred five thousand, one hundred fifty-seven".