28223464 has 16 divisors (see below), whose sum is σ = 53337600. Its totient is φ = 14000112.

The previous prime is 28223389. The next prime is 28223473. The reversal of 28223464 is 46432282.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12874 + ... + 14905.

It is an arithmetic number, because the mean of its divisors is an integer number (3333600).

Almost surely, 2^28223464 is an apocalyptic number.

It is an amenable number.

28223464 is a deficient number, since it is larger than the sum of its proper divisors (25114136).

28223464 is a wasteful number, since it uses less digits than its factorization.

28223464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27912 (or 27908 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The square root of 28223464 is about 5312.5760229855. The cubic root of 28223464 is about 304.4645770613.

The spelling of 28223464 in words is "twenty-eight million, two hundred twenty-three thousand, four hundred sixty-four".