28627816 has 16 divisors (see below), whose sum is σ = 61345440. Its totient is φ = 12269040.

The previous prime is 28627811. The next prime is 28627871. The reversal of 28627816 is 61872682.

It is not an unprimeable number, because it can be changed into a prime (28627811) 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 3 ways as a sum of consecutive naturals, for example, 255550 + ... + 255661.

It is an arithmetic number, because the mean of its divisors is an integer number (3834090).

Almost surely, 2^28627816 is an apocalyptic number.

It is an amenable number.

28627816 is an abundant number, since it is smaller than the sum of its proper divisors (32717624).

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

28627816 is a wasteful number, since it uses less digits than its factorization.

28627816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511224 (or 511220 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 28627816 is about 5350.4967993636. The cubic root of 28627816 is about 305.9116893838.

The spelling of 28627816 in words is "twenty-eight million, six hundred twenty-seven thousand, eight hundred sixteen".