28129094 has 16 divisors (see below), whose sum is σ = 48691968. Its totient is φ = 11937672.

The previous prime is 28129093. The next prime is 28129109. The reversal of 28129094 is 49092182.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28129091) 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, 8312 + ... + 11195.

It is an arithmetic number, because the mean of its divisors is an integer number (3043248).

Almost surely, 2^28129094 is an apocalyptic number.

28129094 is a deficient number, since it is larger than the sum of its proper divisors (20562874).

28129094 is a wasteful number, since it uses less digits than its factorization.

28129094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19619.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 28129094 is about 5303.6868308753. The cubic root of 28129094 is about 304.1248549353.

The spelling of 28129094 in words is "twenty-eight million, one hundred twenty-nine thousand, ninety-four".