28540716 has 24 divisors (see below), whose sum is σ = 67023600. Its totient is φ = 9452352.

The previous prime is 28540697. The next prime is 28540751. The reversal of 28540716 is 61704582.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5691 + ... + 9458.

It is an arithmetic number, because the mean of its divisors is an integer number (2792650).

Almost surely, 2^28540716 is an apocalyptic number.

It is an amenable number.

28540716 is an abundant number, since it is smaller than the sum of its proper divisors (38482884).

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

28540716 is a wasteful number, since it uses less digits than its factorization.

28540716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15313 (or 15311 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 28540716 is about 5342.3511677912. The cubic root of 28540716 is about 305.6011292366.

The spelling of 28540716 in words is "twenty-eight million, five hundred forty thousand, seven hundred sixteen".