1200040686 has 96 divisors (see below), whose sum is σ = 2935662912. Its totient is φ = 351521280.

The previous prime is 1200040607. The next prime is 1200040687. The reversal of 1200040686 is 6860400021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200040687) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1576546 + ... + 1577306.

It is an arithmetic number, because the mean of its divisors is an integer number (30579822).

Almost surely, 2^1200040686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200040686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1467831456).

1200040686 is an abundant number, since it is smaller than the sum of its proper divisors (1735622226).

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

1200040686 is a wasteful number, since it uses less digits than its factorization.

1200040686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098 (or 1095 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1200040686 is about 34641.6033982262. The cubic root of 1200040686 is about 1062.6705788598.

The spelling of 1200040686 in words is "one billion, two hundred million, forty thousand, six hundred eighty-six".