28323315 has 24 divisors (see below), whose sum is σ = 50423568. Its totient is φ = 14696640.

The previous prime is 28323307. The next prime is 28323331. The reversal of 28323315 is 51332382.

28323315 is a `hidden beast` number, since 28 + 323 + 315 = 666.

It is not a de Polignac number, because 28323315 - 2³ = 28323307 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6841 + ... + 10170.

It is an arithmetic number, because the mean of its divisors is an integer number (2100982).

Almost surely, 2^28323315 is an apocalyptic number.

28323315 is a deficient number, since it is larger than the sum of its proper divisors (22100253).

28323315 is a wasteful number, since it uses less digits than its factorization.

28323315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17059 (or 17056 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 28323315 is about 5321.9653324688. The cubic root of 28323315 is about 304.8232066878.

Adding to 28323315 its reverse (51332382), we get a palindrome (79655697).

The spelling of 28323315 in words is "twenty-eight million, three hundred twenty-three thousand, three hundred fifteen".