28365258 has 16 divisors (see below), whose sum is σ = 56792736. Its totient is φ = 9444720.

The previous prime is 28365257. The next prime is 28365263. The reversal of 28365258 is 85256382.

It is a super-2 number, since 2×28365258² = 1609175722813128, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28365257) 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, 5085 + ... + 9087.

It is an arithmetic number, because the mean of its divisors is an integer number (3549546).

Almost surely, 2^28365258 is an apocalyptic number.

28365258 is an abundant number, since it is smaller than the sum of its proper divisors (28427478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28365258 is a wasteful number, since it uses less digits than its factorization.

28365258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5189.

The product of its digits is 115200, while the sum is 39.

The square root of 28365258 is about 5325.9044302353. The cubic root of 28365258 is about 304.9735997932.

The spelling of 28365258 in words is "twenty-eight million, three hundred sixty-five thousand, two hundred fifty-eight".