28539716 has 48 divisors (see below), whose sum is σ = 54190080. Its totient is φ = 13126560.

The previous prime is 28539689. The next prime is 28539733. The reversal of 28539716 is 61793582.

Its product of digits (90720) is a multiple of the sum of its prime factors (224).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343811 + ... + 343893.

It is an arithmetic number, because the mean of its divisors is an integer number (1128960).

Almost surely, 2^28539716 is an apocalyptic number.

It is an amenable number.

28539716 is a deficient number, since it is larger than the sum of its proper divisors (25650364).

28539716 is a wasteful number, since it uses less digits than its factorization.

28539716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 222 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 28539716 is about 5342.2575752204. The cubic root of 28539716 is about 305.5975600118.

The spelling of 28539716 in words is "twenty-eight million, five hundred thirty-nine thousand, seven hundred sixteen".