1329280752 has 20 divisors (see below), whose sum is σ = 3433975400. Its totient is φ = 443093568.

The previous prime is 1329280739. The next prime is 1329280783. The reversal of 1329280752 is 2570829231.

It is a self number, because there is not a number n which added to its sum of digits gives 1329280752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13846627 + ... + 13846722.

It is an arithmetic number, because the mean of its divisors is an integer number (171698770).

Almost surely, 2^1329280752 is an apocalyptic number.

1329280752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1329280752 is an abundant number, since it is smaller than the sum of its proper divisors (2104694648).

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

1329280752 is a wasteful number, since it uses less digits than its factorization.

1329280752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27693360 (or 27693354 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 1329280752 is about 36459.3026812088. The cubic root of 1329280752 is about 1099.5261738897.

The spelling of 1329280752 in words is "one billion, three hundred twenty-nine million, two hundred eighty thousand, seven hundred fifty-two".