1320667326 has 72 divisors (see below), whose sum is σ = 3174651480. Its totient is φ = 396459360.

The previous prime is 1320667267. The next prime is 1320667349. The reversal of 1320667326 is 6237660231.

1320667326 is a `hidden beast` number, since 1 + 320 + 6 + 6 + 7 + 326 = 666.

It is a super-3 number, since 3×1320667326³ (a number of 28 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 234621 + ... + 240183.

Almost surely, 2^1320667326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320667326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1587325740).

1320667326 is an abundant number, since it is smaller than the sum of its proper divisors (1853984154).

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

1320667326 is a wasteful number, since it uses less digits than its factorization.

1320667326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5702 (or 5688 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 1320667326 is about 36340.9868605683. The cubic root of 1320667326 is about 1097.1461356074.

The spelling of 1320667326 in words is "one billion, three hundred twenty million, six hundred sixty-seven thousand, three hundred twenty-six".