28550315 has 8 divisors (see below), whose sum is σ = 34389360. Its totient is φ = 22754272.

The previous prime is 28550311. The next prime is 28550317. The reversal of 28550315 is 51305582.

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 28550315 - 2² = 28550311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28550311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9269 + ... + 11958.

It is an arithmetic number, because the mean of its divisors is an integer number (4298670).

Almost surely, 2^28550315 is an apocalyptic number.

28550315 is a deficient number, since it is larger than the sum of its proper divisors (5839045).

28550315 is a wasteful number, since it uses less digits than its factorization.

28550315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21501.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 28550315 is about 5343.2494794834. The cubic root of 28550315 is about 305.6353859856.

Adding to 28550315 its reverse (51305582), we get a palindrome (79855897).

The spelling of 28550315 in words is "twenty-eight million, five hundred fifty thousand, three hundred fifteen".