1200005868 has 24 divisors (see below), whose sum is σ = 2831477040. Its totient is φ = 395507200.

The previous prime is 1200005801. The next prime is 1200005923. The reversal of 1200005868 is 8685000021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560733 + ... + 562868.

It is an arithmetic number, because the mean of its divisors is an integer number (117978210).

Almost surely, 2^1200005868 is an apocalyptic number.

It is an amenable number.

1200005868 is an abundant number, since it is smaller than the sum of its proper divisors (1631471172).

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

1200005868 is a wasteful number, since it uses less digits than its factorization.

1200005868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123697 (or 1123695 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 1200005868 is about 34641.1008485585. The cubic root of 1200005868 is about 1062.6603013133.

Adding to 1200005868 its reverse (8685000021), we get a palindrome (9885005889).

The spelling of 1200005868 in words is "one billion, two hundred million, five thousand, eight hundred sixty-eight".