1200214644 has 12 divisors (see below), whose sum is σ = 2800500864. Its totient is φ = 400071544.

The previous prime is 1200214633. The next prime is 1200214649. The reversal of 1200214644 is 4464120021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200214649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50008932 + ... + 50008955.

It is an arithmetic number, because the mean of its divisors is an integer number (233375072).

Almost surely, 2^1200214644 is an apocalyptic number.

It is an amenable number.

1200214644 is an abundant number, since it is smaller than the sum of its proper divisors (1600286220).

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

1200214644 is a wasteful number, since it uses less digits than its factorization.

1200214644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100017894 (or 100017892 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1200214644 is about 34644.1141321293. The cubic root of 1200214644 is about 1062.7219246514.

Adding to 1200214644 its reverse (4464120021), we get a palindrome (5664334665).

The spelling of 1200214644 in words is "one billion, two hundred million, two hundred fourteen thousand, six hundred forty-four".