28097335 has 24 divisors (see below), whose sum is σ = 39784176. Its totient is φ = 18990720.

The previous prime is 28097323. The next prime is 28097339. The reversal of 28097335 is 53379082.

It is not a de Polignac number, because 28097335 - 2⁷ = 28097207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28097294 and 28097303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28097339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17100 + ... + 18670.

It is an arithmetic number, because the mean of its divisors is an integer number (1657674).

Almost surely, 2^28097335 is an apocalyptic number.

28097335 is a deficient number, since it is larger than the sum of its proper divisors (11686841).

28097335 is a wasteful number, since it uses less digits than its factorization.

28097335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663 (or 1656 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 28097335 is about 5300.6919359646. The cubic root of 28097335 is about 304.0103549970.

The spelling of 28097335 in words is "twenty-eight million, ninety-seven thousand, three hundred thirty-five".