28730016 has 72 divisors (see below), whose sum is σ = 93379104. Its totient is φ = 8208000.

The previous prime is 28730011. The next prime is 28730021. The reversal of 28730016 is 61003782.

It is an interprime number because it is at equal distance from previous prime (28730011) and next prime (28730021).

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (28730011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5110 + ... + 9141.

It is an arithmetic number, because the mean of its divisors is an integer number (1296932).

Almost surely, 2^28730016 is an apocalyptic number.

It is an amenable number.

28730016 is an abundant number, since it is smaller than the sum of its proper divisors (64649088).

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

28730016 is a wasteful number, since it uses less digits than its factorization.

28730016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14274 (or 14263 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 28730016 is about 5360.0388058297. The cubic root of 28730016 is about 306.2752873191.

Adding to 28730016 its reverse (61003782), we get a palindrome (89733798).

It can be divided in two parts, 287 and 30016, that added together give a palindrome (30303).

The spelling of 28730016 in words is "twenty-eight million, seven hundred thirty thousand, sixteen".