1297546272 has 72 divisors (see below), whose sum is σ = 4025352240. Its totient is φ = 393194880.

The previous prime is 1297546259. The next prime is 1297546279. The reversal of 1297546272 is 2726457921.

1297546272 is a `hidden beast` number, since 12 + 9 + 7 + 5 + 4 + 627 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1297546279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201622 + ... + 207957.

It is an arithmetic number, because the mean of its divisors is an integer number (55907670).

Almost surely, 2^1297546272 is an apocalyptic number.

1297546272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1297546272 is an abundant number, since it is smaller than the sum of its proper divisors (2727805968).

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

1297546272 is a wasteful number, since it uses less digits than its factorization.

1297546272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409606 (or 409595 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 1297546272 is about 36021.4695980050. The cubic root of 1297546272 is about 1090.7057887209.

The spelling of 1297546272 in words is "one billion, two hundred ninety-seven million, five hundred forty-six thousand, two hundred seventy-two".