1297759320 has 320 divisors, whose sum is σ = 5126315040. Its totient is φ = 290304000.

The previous prime is 1297759301. The next prime is 1297759357. The reversal of 1297759320 is 239577921.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 461920 + ... + 464720.

Almost surely, 2^1297759320 is an apocalyptic number.

1297759320 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 1297759320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2563157520).

1297759320 is an abundant number, since it is smaller than the sum of its proper divisors (3828555720).

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

1297759320 is a wasteful number, since it uses less digits than its factorization.

1297759320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848 (or 2835 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 1297759320 is about 36024.4267129957. The cubic root of 1297759320 is about 1090.7654808684.

The spelling of 1297759320 in words is "one billion, two hundred ninety-seven million, seven hundred fifty-nine thousand, three hundred twenty".