1320299352 has 80 divisors (see below), whose sum is σ = 3705068400. Its totient is φ = 439266240.

The previous prime is 1320299347. The next prime is 1320299359. The reversal of 1320299352 is 2539920231.

1320299352 is a `hidden beast` number, since 13 + 2 + 0 + 299 + 352 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320299359) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 407274 + ... + 410502.

It is an arithmetic number, because the mean of its divisors is an integer number (46313355).

Almost surely, 2^1320299352 is an apocalyptic number.

1320299352 is a gapful number since it is divisible by the number (12) 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 1320299352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1852534200).

1320299352 is an abundant number, since it is smaller than the sum of its proper divisors (2384769048).

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

1320299352 is a wasteful number, since it uses less digits than its factorization.

1320299352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878 (or 3865 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 1320299352 is about 36335.9237119411. The cubic root of 1320299352 is about 1097.0442278456.

The spelling of 1320299352 in words is "one billion, three hundred twenty million, two hundred ninety-nine thousand, three hundred fifty-two".