28041234 has 32 divisors (see below), whose sum is σ = 61689600. Its totient is φ = 8443392.

The previous prime is 28041217. The next prime is 28041257. The reversal of 28041234 is 43214082.

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 15 ways as a sum of consecutive naturals, for example, 159 + ... + 7490.

It is an arithmetic number, because the mean of its divisors is an integer number (1927800).

Almost surely, 2^28041234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28041234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30844800).

28041234 is an abundant number, since it is smaller than the sum of its proper divisors (33648366).

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

28041234 is a wasteful number, since it uses less digits than its factorization.

28041234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7714.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 28041234 is about 5295.3974355094. The cubic root of 28041234 is about 303.8078844451.

It can be divided in two parts, 280 and 41234, that added together give a palindrome (41514).

The spelling of 28041234 in words is "twenty-eight million, forty-one thousand, two hundred thirty-four".