28108814 has 4 divisors (see below), whose sum is σ = 42163224. Its totient is φ = 14054406.

The previous prime is 28108807. The next prime is 28108819. The reversal of 28108814 is 41880182.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28108819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7027202 + ... + 7027205.

It is an arithmetic number, because the mean of its divisors is an integer number (10540806).

Almost surely, 2^28108814 is an apocalyptic number.

28108814 is a deficient number, since it is larger than the sum of its proper divisors (14054410).

28108814 is a wasteful number, since it uses less digits than its factorization.

28108814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14054409.

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 28108814 is about 5301.7746085627. The cubic root of 28108814 is about 304.0517499043.

Adding to 28108814 its reverse (41880182), we get a palindrome (69988996).

The spelling of 28108814 in words is "twenty-eight million, one hundred eight thousand, eight hundred fourteen".