1297652160 has 448 divisors, whose sum is σ = 5137026048. Its totient is φ = 270729216.

The previous prime is 1297652117. The next prime is 1297652189. The reversal of 1297652160 is 612567921.

It is a tau number, because it is divible by the number of its divisors (448).

It is a super-2 number, since 2×1297652160² = 3367802256705331200, which contains 22 as substring.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 4226727 + ... + 4227033.

It is an arithmetic number, because the mean of its divisors is an integer number (11466576).

Almost surely, 2^1297652160 is an apocalyptic number.

1297652160 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 1297652160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2568513024).

1297652160 is an abundant number, since it is smaller than the sum of its proper divisors (3839373888).

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

1297652160 is a wasteful number, since it uses less digits than its factorization.

1297652160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 1297652160 is about 36022.9393581368. The cubic root of 1297652160 is about 1090.7354574158.

The spelling of 1297652160 in words is "one billion, two hundred ninety-seven million, six hundred fifty-two thousand, one hundred sixty".