28444468 has 48 divisors (see below), whose sum is σ = 59270400. Its totient is φ = 11810304.

The previous prime is 28444459. The next prime is 28444469. The reversal of 28444468 is 86444482.

It is a self number, because there is not a number n which added to its sum of digits gives 28444468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28444469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19633 + ... + 21031.

It is an arithmetic number, because the mean of its divisors is an integer number (1234800).

Almost surely, 2^28444468 is an apocalyptic number.

It is an amenable number.

28444468 is an abundant number, since it is smaller than the sum of its proper divisors (30825932).

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

28444468 is a wasteful number, since it uses less digits than its factorization.

28444468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456 (or 1454 counting only the distinct ones).

The product of its digits is 196608, while the sum is 40.

The square root of 28444468 is about 5333.3355416662. The cubic root of 28444468 is about 305.2572156112.

The spelling of 28444468 in words is "twenty-eight million, four hundred forty-four thousand, four hundred sixty-eight".