28134430 has 16 divisors (see below), whose sum is σ = 52011360. Its totient is φ = 10949472.

The previous prime is 28134409. The next prime is 28134433. The reversal of 28134430 is 3443182.

It is a junction number, because it is equal to n+sod(n) for n = 28134395 and 28134404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28134433) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 37650 + ... + 38389.

It is an arithmetic number, because the mean of its divisors is an integer number (3250710).

Almost surely, 2^28134430 is an apocalyptic number.

28134430 is a deficient number, since it is larger than the sum of its proper divisors (23876930).

28134430 is a wasteful number, since it uses less digits than its factorization.

28134430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76083.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 28134430 is about 5304.1898533141. The cubic root of 28134430 is about 304.1440842266.

The spelling of 28134430 in words is "twenty-eight million, one hundred thirty-four thousand, four hundred thirty".