28115318 has 36 divisors (see below), whose sum is σ = 53946396. Its totient is φ = 10949400.

The previous prime is 28115309. The next prime is 28115323. The reversal of 28115318 is 81351182.

It is a super-2 number, since 2×28115318² = 1580942212482248, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10673 + ... + 13043.

It is an arithmetic number, because the mean of its divisors is an integer number (1498511).

Almost surely, 2^28115318 is an apocalyptic number.

28115318 is a deficient number, since it is larger than the sum of its proper divisors (25831078).

28115318 is a wasteful number, since it uses less digits than its factorization.

28115318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409 (or 2391 counting only the distinct ones).

The product of its digits is 1920, while the sum is 29.

The square root of 28115318 is about 5302.3879526115. The cubic root of 28115318 is about 304.0751992522.

The spelling of 28115318 in words is "twenty-eight million, one hundred fifteen thousand, three hundred eighteen".