28887064 has 8 divisors (see below), whose sum is σ = 54163260. Its totient is φ = 14443528.

The previous prime is 28887041. The next prime is 28887073. The reversal of 28887064 is 46078882.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 28887064.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805434 + ... + 1805449.

Almost surely, 2^28887064 is an apocalyptic number.

It is an amenable number.

28887064 is a deficient number, since it is larger than the sum of its proper divisors (25276196).

28887064 is a wasteful number, since it uses less digits than its factorization.

28887064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610889 (or 3610885 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 28887064 is about 5374.6687339779. The cubic root of 28887064 is about 306.8323416908.

The spelling of 28887064 in words is "twenty-eight million, eight hundred eighty-seven thousand, sixty-four".