28128034 has 16 divisors (see below), whose sum is σ = 48029760. Its totient is φ = 12229360.

The previous prime is 28128019. The next prime is 28128059. The reversal of 28128034 is 43082182.

It is a junction number, because it is equal to n+sod(n) for n = 28127993 and 28128011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27289 + ... + 28300.

It is an arithmetic number, because the mean of its divisors is an integer number (3001860).

Almost surely, 2^28128034 is an apocalyptic number.

28128034 is a deficient number, since it is larger than the sum of its proper divisors (19901726).

28128034 is a wasteful number, since it uses less digits than its factorization.

28128034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55625.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 28128034 is about 5303.5868994483. The cubic root of 28128034 is about 304.1210347341.

The spelling of 28128034 in words is "twenty-eight million, one hundred twenty-eight thousand, thirty-four".