1172256384 has 128 divisors (see below), whose sum is σ = 3367224000. Its totient is φ = 359202816.

The previous prime is 1172256377. The next prime is 1172256401. The reversal of 1172256384 is 4836522711.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2241147 + ... + 2241669.

Almost surely, 2^1172256384 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 1172256384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1683612000).

1172256384 is an abundant number, since it is smaller than the sum of its proper divisors (2194967616).

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

1172256384 is a wasteful number, since it uses less digits than its factorization.

1172256384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002 (or 990 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 1172256384 is about 34238.2298607857. The cubic root of 1172256384 is about 1054.4051913904.

The spelling of 1172256384 in words is "one billion, one hundred seventy-two million, two hundred fifty-six thousand, three hundred eighty-four".