28331246 has 16 divisors (see below), whose sum is σ = 43953840. Its totient is φ = 13686720.

The previous prime is 28331209. The next prime is 28331249. The reversal of 28331246 is 64213382.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28331249) by changing a digit.

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, 7160 + ... + 10388.

It is an arithmetic number, because the mean of its divisors is an integer number (2747115).

Almost surely, 2^28331246 is an apocalyptic number.

28331246 is a deficient number, since it is larger than the sum of its proper divisors (15622594).

28331246 is a wasteful number, since it uses less digits than its factorization.

28331246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3379.

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

The square root of 28331246 is about 5322.7103997869. The cubic root of 28331246 is about 304.8516558911.

The spelling of 28331246 in words is "twenty-eight million, three hundred thirty-one thousand, two hundred forty-six".