28246446 has 24 divisors (see below), whose sum is σ = 61340760. Its totient is φ = 9393936.

The previous prime is 28246409. The next prime is 28246453. The reversal of 28246446 is 64464282.

It is a happy number.

28246446 is a `hidden beast` number, since 2 + 8 + 2 + 4 + 644 + 6 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28246446.

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 11 ways as a sum of consecutive naturals, for example, 7621 + ... + 10703.

It is an arithmetic number, because the mean of its divisors is an integer number (2555865).

Almost surely, 2^28246446 is an apocalyptic number.

28246446 is an abundant number, since it is smaller than the sum of its proper divisors (33094314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28246446 is a wasteful number, since it uses less digits than its factorization.

28246446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600 (or 3597 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The square root of 28246446 is about 5314.7385636548. The cubic root of 28246446 is about 304.5471951567.

The spelling of 28246446 in words is "twenty-eight million, two hundred forty-six thousand, four hundred forty-six".