1297728576 has 189 divisors, whose sum is σ = 3976104951. Its totient is φ = 404621568.

The previous prime is 1297728571. The next prime is 1297728581. The reversal of 1297728576 is 6758277921.

It is a happy number.

The square root of 1297728576 is 36024.

It is a perfect power (a square), and thus also a powerful number.

1297728576 is a `hidden beast` number, since 1 + 297 + 7 + 285 + 76 = 666.

It is an interprime number because it is at equal distance from previous prime (1297728571) and next prime (1297728581).

It is not an unprimeable number, because it can be changed into a prime (1297728571) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 16426905 + ... + 16426983.

Almost surely, 2^1297728576 is an apocalyptic number.

1297728576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1297728576 is the 36024-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1297728576

1297728576 is an abundant number, since it is smaller than the sum of its proper divisors (2678376375).

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

1297728576 is an equidigital number, since it uses as much as digits as its factorization.

1297728576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 103 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The cubic root of 1297728576 is about 1090.7568673660.

The spelling of 1297728576 in words is "one billion, two hundred ninety-seven million, seven hundred twenty-eight thousand, five hundred seventy-six".