1200856000 has 56 divisors (see below), whose sum is σ = 2973939696. Its totient is φ = 480339200.

The previous prime is 1200855991. The next prime is 1200856001. The reversal of 1200856000 is 6580021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200856001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67054 + ... + 83053.

It is an arithmetic number, because the mean of its divisors is an integer number (53106066).

Almost surely, 2^1200856000 is an apocalyptic number.

1200856000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200856000 is an abundant number, since it is smaller than the sum of its proper divisors (1773083696).

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

1200856000 is an equidigital number, since it uses as much as digits as its factorization.

1200856000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150134 (or 150114 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1200856000 is about 34653.3692445626. The cubic root of 1200856000 is about 1062.9111857186.

The spelling of 1200856000 in words is "one billion, two hundred million, eight hundred fifty-six thousand".