1206383856 has 80 divisors (see below), whose sum is σ = 3307288320. Its totient is φ = 378104320.

The previous prime is 1206383831. The next prime is 1206383863. The reversal of 1206383856 is 6583836021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55876 + ... + 74396.

It is an arithmetic number, because the mean of its divisors is an integer number (41341104).

Almost surely, 2^1206383856 is an apocalyptic number.

1206383856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1206383856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653644160).

1206383856 is an abundant number, since it is smaller than the sum of its proper divisors (2100904464).

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

1206383856 is a wasteful number, since it uses less digits than its factorization.

1206383856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18614 (or 18608 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 1206383856 is about 34733.0369533100. The cubic root of 1206383856 is about 1064.5396427767.

The spelling of 1206383856 in words is "one billion, two hundred six million, three hundred eighty-three thousand, eight hundred fifty-six".