1297227568 has 120 divisors (see below), whose sum is σ = 3334286592. Its totient is φ = 482936832.

The previous prime is 1297227563. The next prime is 1297227571. The reversal of 1297227568 is 8657227921.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (1297227563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169521 + ... + 177007.

Almost surely, 2^1297227568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1297227568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1667143296).

1297227568 is an abundant number, since it is smaller than the sum of its proper divisors (2037059024).

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

1297227568 is a wasteful number, since it uses less digits than its factorization.

1297227568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7539 (or 7526 counting only the distinct ones).

The product of its digits is 846720, while the sum is 49.

The square root of 1297227568 is about 36017.0455201423. The cubic root of 1297227568 is about 1090.6164814982.

The spelling of 1297227568 in words is "one billion, two hundred ninety-seven million, two hundred twenty-seven thousand, five hundred sixty-eight".