28987752 has 32 divisors (see below), whose sum is σ = 72614880. Its totient is φ = 9643200.

The previous prime is 28987747. The next prime is 28987769. The reversal of 28987752 is 25778982.

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, 15963 + ... + 17685.

It is an arithmetic number, because the mean of its divisors is an integer number (2269215).

Almost surely, 2^28987752 is an apocalyptic number.

It is an amenable number.

28987752 is an abundant number, since it is smaller than the sum of its proper divisors (43627128).

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

28987752 is a wasteful number, since it uses less digits than its factorization.

28987752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433 (or 2429 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The square root of 28987752 is about 5384.0274887857. The cubic root of 28987752 is about 307.1884239073.

The spelling of 28987752 in words is "twenty-eight million, nine hundred eighty-seven thousand, seven hundred fifty-two".