28875760 has 20 divisors (see below), whose sum is σ = 67136328. Its totient is φ = 11550272.

The previous prime is 28875751. The next prime is 28875761. The reversal of 28875760 is 6757882.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28875761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180394 + ... + 180553.

Almost surely, 2^28875760 is an apocalyptic number.

28875760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28875760 is an abundant number, since it is smaller than the sum of its proper divisors (38260568).

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

28875760 is a wasteful number, since it uses less digits than its factorization.

28875760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360960 (or 360954 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 28875760 is about 5373.6170313858. The cubic root of 28875760 is about 306.7923135625.

The spelling of 28875760 in words is "twenty-eight million, eight hundred seventy-five thousand, seven hundred sixty".