1206455320 has 128 divisors (see below), whose sum is σ = 3304488960. Its totient is φ = 386979840.

The previous prime is 1206455311. The next prime is 1206455321. The reversal of 1206455320 is 235546021.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206455321) 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 31 ways as a sum of consecutive naturals, for example, 908497 + ... + 909823.

It is an arithmetic number, because the mean of its divisors is an integer number (25816320).

Almost surely, 2^1206455320 is an apocalyptic number.

1206455320 is a gapful number since it is divisible by the number (10) 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 1206455320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1652244480).

1206455320 is an abundant number, since it is smaller than the sum of its proper divisors (2098033640).

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

1206455320 is a wasteful number, since it uses less digits than its factorization.

1206455320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553 (or 1549 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1206455320 is about 34734.0656992527. The cubic root of 1206455320 is about 1064.5606628300.

The spelling of 1206455320 in words is "one billion, two hundred six million, four hundred fifty-five thousand, three hundred twenty".