28347834 has 32 divisors (see below), whose sum is σ = 58046976. Its totient is φ = 9226800.

The previous prime is 28347811. The next prime is 28347841. The reversal of 28347834 is 43874382.

It is a junction number, because it is equal to n+sod(n) for n = 28347792 and 28347801.

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 15 ways as a sum of consecutive naturals, for example, 60469 + ... + 60935.

It is an arithmetic number, because the mean of its divisors is an integer number (1813968).

Almost surely, 2^28347834 is an apocalyptic number.

28347834 is an abundant number, since it is smaller than the sum of its proper divisors (29699142).

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

28347834 is a wasteful number, since it uses less digits than its factorization.

28347834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690.

The product of its digits is 129024, while the sum is 39.

The square root of 28347834 is about 5324.2684004471. The cubic root of 28347834 is about 304.9111413634.

The spelling of 28347834 in words is "twenty-eight million, three hundred forty-seven thousand, eight hundred thirty-four".