28431094 has 4 divisors (see below), whose sum is σ = 42646644. Its totient is φ = 14215546.

The previous prime is 28431083. The next prime is 28431113. The reversal of 28431094 is 49013482.

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

It is a Smith number, since the sum of its digits (31) 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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7107772 + ... + 7107775.

It is an arithmetic number, because the mean of its divisors is an integer number (10661661).

Almost surely, 2^28431094 is an apocalyptic number.

28431094 is a deficient number, since it is larger than the sum of its proper divisors (14215550).

28431094 is a wasteful number, since it uses less digits than its factorization.

28431094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14215549.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 28431094 is about 5332.0815822716. The cubic root of 28431094 is about 305.2093662367.

The spelling of 28431094 in words is "twenty-eight million, four hundred thirty-one thousand, ninety-four".