28323415 has 8 divisors (see below), whose sum is σ = 34817328. Its totient is φ = 22105920.

The previous prime is 28323409. The next prime is 28323437. The reversal of 28323415 is 51432382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28323415 - 2¹¹ = 28321367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68877 + ... + 69286.

It is an arithmetic number, because the mean of its divisors is an integer number (4352166).

Almost surely, 2^28323415 is an apocalyptic number.

28323415 is a deficient number, since it is larger than the sum of its proper divisors (6493913).

28323415 is a wasteful number, since it uses less digits than its factorization.

28323415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138209.

The product of its digits is 5760, while the sum is 28.

The square root of 28323415 is about 5321.9747274860. The cubic root of 28323415 is about 304.8235654298.

Adding to 28323415 its reverse (51432382), we get a palindrome (79755797).

The spelling of 28323415 in words is "twenty-eight million, three hundred twenty-three thousand, four hundred fifteen".