28371315 has 32 divisors (see below), whose sum is σ = 52992000. Its totient is φ = 12691584.

The previous prime is 28371311. The next prime is 28371319. The reversal of 28371315 is 51317382.

It is an interprime number because it is at equal distance from previous prime (28371311) and next prime (28371319).

It is not a de Polignac number, because 28371315 - 2² = 28371311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28371311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2061 + ... + 7809.

It is an arithmetic number, because the mean of its divisors is an integer number (1656000).

Almost surely, 2^28371315 is an apocalyptic number.

28371315 is a deficient number, since it is larger than the sum of its proper divisors (24620685).

28371315 is a wasteful number, since it uses less digits than its factorization.

28371315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5811.

The product of its digits is 5040, while the sum is 30.

The square root of 28371315 is about 5326.4730356963. The cubic root of 28371315 is about 304.9953058491.

Adding to 28371315 its reverse (51317382), we get a palindrome (79688697).

The spelling of 28371315 in words is "twenty-eight million, three hundred seventy-one thousand, three hundred fifteen".