28550316 has 24 divisors (see below), whose sum is σ = 66769920. Its totient is φ = 9494992.

The previous prime is 28550311. The next prime is 28550317. The reversal of 28550316 is 61305582.

It is a congruent number.

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

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, 3265 + ... + 8231.

It is an arithmetic number, because the mean of its divisors is an integer number (2782080).

Almost surely, 2^28550316 is an apocalyptic number.

It is an amenable number.

28550316 is an abundant number, since it is smaller than the sum of its proper divisors (38219604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28550316 is a wasteful number, since it uses less digits than its factorization.

28550316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5453 (or 5451 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 28550316 is about 5343.2495730595. The cubic root of 28550316 is about 305.6353895540.

Adding to 28550316 its sum of digits (30), we get a triangular number (28550346 = T₇₅₅₆).

Adding to 28550316 its reverse (61305582), we get a palindrome (89855898).

The spelling of 28550316 in words is "twenty-eight million, five hundred fifty thousand, three hundred sixteen".