28927968 has 24 divisors (see below), whose sum is σ = 75936168. Its totient is φ = 9642624.

The previous prime is 28927957. The next prime is 28927973. The reversal of 28927968 is 86972982.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 28927968.

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, 150571 + ... + 150762.

It is an arithmetic number, because the mean of its divisors is an integer number (3164007).

Almost surely, 2^28927968 is an apocalyptic number.

It is an amenable number.

28927968 is an abundant number, since it is smaller than the sum of its proper divisors (47008200).

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

28927968 is a wasteful number, since it uses less digits than its factorization.

28927968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301346 (or 301338 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 28927968 is about 5378.4726456495. The cubic root of 28927968 is about 306.9770979602.

The spelling of 28927968 in words is "twenty-eight million, nine hundred twenty-seven thousand, nine hundred sixty-eight".