28500434 has 8 divisors (see below), whose sum is σ = 43906188. Its totient is φ = 13865040.

The previous prime is 28500401. The next prime is 28500463. The reversal of 28500434 is 43400582.

It can be written as a sum of positive squares in 2 ways, for example, as 28058209 + 442225 = 5297^2 + 665^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 192497 + ... + 192644.

Almost surely, 2^28500434 is an apocalyptic number.

28500434 is a deficient number, since it is larger than the sum of its proper divisors (15405754).

28500434 is a wasteful number, since it uses less digits than its factorization.

28500434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385180.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 28500434 is about 5338.5797736851. The cubic root of 28500434 is about 305.4572877071.

The spelling of 28500434 in words is "twenty-eight million, five hundred thousand, four hundred thirty-four".