28814328 has 24 divisors (see below), whose sum is σ = 78039000. Its totient is φ = 9604752.

The previous prime is 28814311. The next prime is 28814333. The reversal of 28814328 is 82341882.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 28814292 and 28814301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 200028 + ... + 200171.

It is an arithmetic number, because the mean of its divisors is an integer number (3251625).

Almost surely, 2^28814328 is an apocalyptic number.

It is an amenable number.

28814328 is an abundant number, since it is smaller than the sum of its proper divisors (49224672).

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

28814328 is a wasteful number, since it uses less digits than its factorization.

28814328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400211 (or 400204 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 28814328 is about 5367.8979125911. The cubic root of 28814328 is about 306.5745963891.

The spelling of 28814328 in words is "twenty-eight million, eight hundred fourteen thousand, three hundred twenty-eight".