28054434 has 16 divisors (see below), whose sum is σ = 58548672. Its totient is φ = 8944848.

The previous prime is 28054409. The next prime is 28054451. The reversal of 28054434 is 43445082.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 101509 + ... + 101784.

It is an arithmetic number, because the mean of its divisors is an integer number (3659292).

Almost surely, 2^28054434 is an apocalyptic number.

28054434 is an abundant number, since it is smaller than the sum of its proper divisors (30494238).

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

28054434 is a wasteful number, since it uses less digits than its factorization.

28054434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203321.

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 28054434 is about 5296.6436542399. The cubic root of 28054434 is about 303.8555480035.

The spelling of 28054434 in words is "twenty-eight million, fifty-four thousand, four hundred thirty-four".