28343884 has 6 divisors (see below), whose sum is σ = 49601804. Its totient is φ = 14171940.

The previous prime is 28343873. The next prime is 28343891. The reversal of 28343884 is 48834382.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3542982 + ... + 3542989.

Almost surely, 2^28343884 is an apocalyptic number.

It is an amenable number.

28343884 is a deficient number, since it is larger than the sum of its proper divisors (21257920).

28343884 is a wasteful number, since it uses less digits than its factorization.

28343884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7085975 (or 7085973 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The square root of 28343884 is about 5323.8974445419. The cubic root of 28343884 is about 304.8969785535.

The spelling of 28343884 in words is "twenty-eight million, three hundred forty-three thousand, eight hundred eighty-four".