28461233 has 4 divisors (see below), whose sum is σ = 28566528. Its totient is φ = 28355940.

The previous prime is 28461229. The next prime is 28461239. The reversal of 28461233 is 33216482.

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 28461233 - 2² = 28461229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28461196 and 28461205.

It is not an unprimeable number, because it can be changed into a prime (28461239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52241 + ... + 52782.

It is an arithmetic number, because the mean of its divisors is an integer number (7141632).

Almost surely, 2^28461233 is an apocalyptic number.

It is an amenable number.

28461233 is a deficient number, since it is larger than the sum of its proper divisors (105295).

28461233 is a wasteful number, since it uses less digits than its factorization.

28461233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105294.

The product of its digits is 6912, while the sum is 29.

The square root of 28461233 is about 5334.9070282433. The cubic root of 28461233 is about 305.3171760941.

The spelling of 28461233 in words is "twenty-eight million, four hundred sixty-one thousand, two hundred thirty-three".