1002255444 has 42 divisors (see below), whose sum is σ = 2629725210. Its totient is φ = 334084176.

The previous prime is 1002255439. The next prime is 1002255467. The reversal of 1002255444 is 4445522001.

1002255444 is a `hidden beast` number, since 100 + 2 + 2 + 554 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 882090000 + 120165444 = 29700^2 + 10962^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 168939 + ... + 174770.

It is an arithmetic number, because the mean of its divisors is an integer number (62612505).

Almost surely, 2^1002255444 is an apocalyptic number.

It is an amenable number.

1002255444 is an abundant number, since it is smaller than the sum of its proper divisors (1627469766).

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

1002255444 is an equidigital number, since it uses as much as digits as its factorization.

1002255444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343731 (or 343714 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1002255444 is about 31658.4182169609. The cubic root of 1002255444 is about 1000.7512501486.

Adding to 1002255444 its reverse (4445522001), we get a palindrome (5447777445).

The spelling of 1002255444 in words is "one billion, two million, two hundred fifty-five thousand, four hundred forty-four".