28354434 has 8 divisors (see below), whose sum is σ = 56708880. Its totient is φ = 9451476.

The previous prime is 28354433. The next prime is 28354439. The reversal of 28354434 is 43445382.

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

28354434 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 28354395 and 28354404.

It is not an unprimeable number, because it can be changed into a prime (28354433) 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 3 ways as a sum of consecutive naturals, for example, 2362864 + ... + 2362875.

It is an arithmetic number, because the mean of its divisors is an integer number (7088610).

Almost surely, 2^28354434 is an apocalyptic number.

28354434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28354434 is a wasteful number, since it uses less digits than its factorization.

28354434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725744.

The product of its digits is 46080, while the sum is 33.

The square root of 28354434 is about 5324.8881678398. Note that the first 3 decimals coincide. The cubic root of 28354434 is about 304.9348028699.

The spelling of 28354434 in words is "twenty-eight million, three hundred fifty-four thousand, four hundred thirty-four".