28718960 has 20 divisors (see below), whose sum is σ = 66771768. Its totient is φ = 11487552.

The previous prime is 28718959. The next prime is 28718971. The reversal of 28718960 is 6981782.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179414 + ... + 179573.

Almost surely, 2^28718960 is an apocalyptic number.

28718960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28718960 is an abundant number, since it is smaller than the sum of its proper divisors (38052808).

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

28718960 is a wasteful number, since it uses less digits than its factorization.

28718960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359000 (or 358994 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 28718960 is about 5359.0073707731. The cubic root of 28718960 is about 306.2359949170.

The spelling of 28718960 in words is "twenty-eight million, seven hundred eighteen thousand, nine hundred sixty".