28710328 has 8 divisors (see below), whose sum is σ = 53831880. Its totient is φ = 14355160.

The previous prime is 28710313. The next prime is 28710337. The reversal of 28710328 is 82301782.

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 28710328.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1794388 + ... + 1794403.

It is an arithmetic number, because the mean of its divisors is an integer number (6728985).

Almost surely, 2^28710328 is an apocalyptic number.

It is an amenable number.

28710328 is a deficient number, since it is larger than the sum of its proper divisors (25121552).

28710328 is a wasteful number, since it uses less digits than its factorization.

28710328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588797 (or 3588793 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 28710328 is about 5358.2019372174. The cubic root of 28710328 is about 306.2053102636.

The spelling of 28710328 in words is "twenty-eight million, seven hundred ten thousand, three hundred twenty-eight".