28094473 has 4 divisors (see below), whose sum is σ = 30648528. Its totient is φ = 25540420.

The previous prime is 28094459. The next prime is 28094503. The reversal of 28094473 is 37449082.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28094473 - 2¹³ = 28086281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28094413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277011 + ... + 1277032.

It is an arithmetic number, because the mean of its divisors is an integer number (7662132).

Almost surely, 2^28094473 is an apocalyptic number.

It is an amenable number.

28094473 is a deficient number, since it is larger than the sum of its proper divisors (2554055).

28094473 is a wasteful number, since it uses less digits than its factorization.

28094473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554054.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 28094473 is about 5300.4219643345. The cubic root of 28094473 is about 304.0000324619. Note that the first 4 decimals are identical.

The spelling of 28094473 in words is "twenty-eight million, ninety-four thousand, four hundred seventy-three".