28257935 has 8 divisors (see below), whose sum is σ = 34374480. Its totient is φ = 22296384.

The previous prime is 28257907. The next prime is 28257937. The reversal of 28257935 is 53975282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28257935 - 2²⁰ = 27209359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28257892 and 28257901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28257937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38345 + ... + 39074.

It is an arithmetic number, because the mean of its divisors is an integer number (4296810).

Almost surely, 2^28257935 is an apocalyptic number.

28257935 is a deficient number, since it is larger than the sum of its proper divisors (6116545).

28257935 is an equidigital number, since it uses as much as digits as its factorization.

28257935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77497.

The product of its digits is 151200, while the sum is 41.

The square root of 28257935 is about 5315.8193159663. The cubic root of 28257935 is about 304.5884802142.

It can be divided in two parts, 28257 and 935, that added together give a palindrome (29192).

The spelling of 28257935 in words is "twenty-eight million, two hundred fifty-seven thousand, nine hundred thirty-five".