1200003444 has 96 divisors (see below), whose sum is σ = 3285632000. Its totient is φ = 377703648.

The previous prime is 1200003437. The next prime is 1200003473. The reversal of 1200003444 is 4443000021.

It is a super-2 number, since 2×1200003444² = 2880016531223722272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 776937 + ... + 778479.

Almost surely, 2^1200003444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200003444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1642816000).

1200003444 is an abundant number, since it is smaller than the sum of its proper divisors (2085628556).

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

1200003444 is a wasteful number, since it uses less digits than its factorization.

1200003444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954 (or 1946 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1200003444 is about 34641.0658612001. The cubic root of 1200003444 is about 1062.6595857917.

Adding to 1200003444 its reverse (4443000021), we get a palindrome (5643003465).

The spelling of 1200003444 in words is "one billion, two hundred million, three thousand, four hundred forty-four".