28251834 has 16 divisors (see below), whose sum is σ = 60850272. Its totient is φ = 8692848.

The previous prime is 28251833. The next prime is 28251857. The reversal of 28251834 is 43815282.

It is a super-2 number, since 2×28251834² = 1596332248727112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28251795 and 28251804.

It is not an unprimeable number, because it can be changed into a prime (28251833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181024 + ... + 181179.

It is an arithmetic number, because the mean of its divisors is an integer number (3803142).

Almost surely, 2^28251834 is an apocalyptic number.

28251834 is an abundant number, since it is smaller than the sum of its proper divisors (32598438).

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

28251834 is a wasteful number, since it uses less digits than its factorization.

28251834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362221.

The product of its digits is 15360, while the sum is 33.

The square root of 28251834 is about 5315.2454317745. The cubic root of 28251834 is about 304.5665580170.

The spelling of 28251834 in words is "twenty-eight million, two hundred fifty-one thousand, eight hundred thirty-four".