28575297 has 12 divisors (see below), whose sum is σ = 43448080. Its totient is φ = 18047448.

The previous prime is 28575277. The next prime is 28575301. The reversal of 28575297 is 79257582.

It is a happy number.

It is not a de Polignac number, because 28575297 - 2⁶ = 28575233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28575257) 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, 83383 + ... + 83724.

Almost surely, 2^28575297 is an apocalyptic number.

It is an amenable number.

28575297 is a deficient number, since it is larger than the sum of its proper divisors (14872783).

28575297 is a wasteful number, since it uses less digits than its factorization.

28575297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167132 (or 167129 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 28575297 is about 5345.5866843594. The cubic root of 28575297 is about 305.7245053440.

The spelling of 28575297 in words is "twenty-eight million, five hundred seventy-five thousand, two hundred ninety-seven".