1255069728 has 336 divisors, whose sum is σ = 4157981856. Its totient is φ = 369515520.

The previous prime is 1255069703. The next prime is 1255069759. The reversal of 1255069728 is 8279605521.

1255069728 is a `hidden beast` number, since 1 + 2 + 550 + 6 + 97 + 2 + 8 = 666.

It is an unprimeable number.

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 55 ways as a sum of consecutive naturals, for example, 17192700 + ... + 17192772.

It is an arithmetic number, because the mean of its divisors is an integer number (12374946).

Almost surely, 2^1255069728 is an apocalyptic number.

1255069728 is a gapful number since it is divisible by the number (18) 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 1255069728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2078990928).

1255069728 is an abundant number, since it is smaller than the sum of its proper divisors (2902912128).

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

1255069728 is an equidigital number, since it uses as much as digits as its factorization.

1255069728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 1255069728 is about 35426.9632906915. The cubic root of 1255069728 is about 1078.6717003179.

The spelling of 1255069728 in words is "one billion, two hundred fifty-five million, sixty-nine thousand, seven hundred twenty-eight".