1206469728 has 72 divisors (see below), whose sum is σ = 3557991528. Its totient is φ = 402153984.

The previous prime is 1206469721. The next prime is 1206469729. The reversal of 1206469728 is 8279646021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206469721) 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 11 ways as a sum of consecutive naturals, for example, 69801 + ... + 85352.

It is an arithmetic number, because the mean of its divisors is an integer number (49416549).

Almost surely, 2^1206469728 is an apocalyptic number.

1206469728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1206469728 is an abundant number, since it is smaller than the sum of its proper divisors (2351521800).

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

1206469728 is an equidigital number, since it uses as much as digits as its factorization.

1206469728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155178 (or 155158 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1206469728 is about 34734.2731030894. The cubic root of 1206469728 is about 1064.5649006244.

The spelling of 1206469728 in words is "one billion, two hundred six million, four hundred sixty-nine thousand, seven hundred twenty-eight".