444551028 has 48 divisors (see below), whose sum is σ = 1087348416. Its totient is φ = 141200640.

The previous prime is 444551021. The next prime is 444551053. The reversal of 444551028 is 820155444.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 444551028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444551021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10650 + ... + 31662.

It is an arithmetic number, because the mean of its divisors is an integer number (22653092).

Almost surely, 2^444551028 is an apocalyptic number.

It is an amenable number.

444551028 is an abundant number, since it is smaller than the sum of its proper divisors (642797388).

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

444551028 is a wasteful number, since it uses less digits than its factorization.

444551028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21104 (or 21102 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 33.

The square root of 444551028 is about 21084.3787672295. The cubic root of 444551028 is about 763.2038273501.

The spelling of 444551028 in words is "four hundred forty-four million, five hundred fifty-one thousand, twenty-eight".