1206261856 has 24 divisors (see below), whose sum is σ = 2401517160. Its totient is φ = 596352768.

The previous prime is 1206261829. The next prime is 1206261857. The reversal of 1206261856 is 6581626021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206261857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208926 + ... + 214621.

It is an arithmetic number, because the mean of its divisors is an integer number (100063215).

Almost surely, 2^1206261856 is an apocalyptic number.

1206261856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1206261856 is a deficient number, since it is larger than the sum of its proper divisors (1195255304).

1206261856 is an equidigital number, since it uses as much as digits as its factorization.

1206261856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423646 (or 423638 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 1206261856 is about 34731.2806559159. The cubic root of 1206261856 is about 1064.5037564060.

Adding to 1206261856 its reverse (6581626021), we get a palindrome (7787887877).

The spelling of 1206261856 in words is "one billion, two hundred six million, two hundred sixty-one thousand, eight hundred fifty-six".