28040315 has 8 divisors (see below), whose sum is σ = 33739440. Its totient is φ = 22371552.

The previous prime is 28040279. The next prime is 28040323. The reversal of 28040315 is 51304082.

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 28040315 - 2¹² = 28036219 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5504 + ... + 9293.

It is an arithmetic number, because the mean of its divisors is an integer number (4217430).

Almost surely, 2^28040315 is an apocalyptic number.

28040315 is a deficient number, since it is larger than the sum of its proper divisors (5699125).

28040315 is a wasteful number, since it uses less digits than its factorization.

28040315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15181.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 28040315 is about 5295.3106613305. The cubic root of 28040315 is about 303.8045654935.

Adding to 28040315 its reverse (51304082), we get a palindrome (79344397).

The spelling of 28040315 in words is "twenty-eight million, forty thousand, three hundred fifteen".