1297663224 has 128 divisors (see below), whose sum is σ = 3934586880. Its totient is φ = 351244800.

The previous prime is 1297663219. The next prime is 1297663249. The reversal of 1297663224 is 4223667921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100294 + ... + 112490.

It is an arithmetic number, because the mean of its divisors is an integer number (30738960).

Almost surely, 2^1297663224 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 1297663224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1967293440).

1297663224 is an abundant number, since it is smaller than the sum of its proper divisors (2636923656).

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

1297663224 is a wasteful number, since it uses less digits than its factorization.

1297663224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12261 (or 12257 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 1297663224 is about 36023.0929266214. The cubic root of 1297663224 is about 1090.7385573381.

The spelling of 1297663224 in words is "one billion, two hundred ninety-seven million, six hundred sixty-three thousand, two hundred twenty-four".