28331422 has 16 divisors (see below), whose sum is σ = 48785760. Its totient is φ = 12087648.

The previous prime is 28331417. The next prime is 28331437. The reversal of 28331422 is 22413382.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 1213 + ... + 7624.

It is an arithmetic number, because the mean of its divisors is an integer number (3049110).

Almost surely, 2^28331422 is an apocalyptic number.

28331422 is a deficient number, since it is larger than the sum of its proper divisors (20454338).

28331422 is a wasteful number, since it uses less digits than its factorization.

28331422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9075.

The product of its digits is 2304, while the sum is 25.

The square root of 28331422 is about 5322.7269326916. The cubic root of 28331422 is about 304.8522871585.

The spelling of 28331422 in words is "twenty-eight million, three hundred thirty-one thousand, four hundred twenty-two".