28470233 has 4 divisors (see below), whose sum is σ = 31058448. Its totient is φ = 25882020.

The previous prime is 28470229. The next prime is 28470241. The reversal of 28470233 is 33207482.

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 28470233 - 2² = 28470229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28470196 and 28470205.

It is not an unprimeable number, because it can be changed into a prime (28470263) 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, 1294091 + ... + 1294112.

It is an arithmetic number, because the mean of its divisors is an integer number (7764612).

Almost surely, 2^28470233 is an apocalyptic number.

It is an amenable number.

28470233 is a deficient number, since it is larger than the sum of its proper divisors (2588215).

28470233 is a wasteful number, since it uses less digits than its factorization.

28470233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588214.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 28470233 is about 5335.7504626810. The cubic root of 28470233 is about 305.3493551286.

The spelling of 28470233 in words is "twenty-eight million, four hundred seventy thousand, two hundred thirty-three".