1155847320 has 240 divisors, whose sum is σ = 3990792960. Its totient is φ = 300029184.

The previous prime is 1155847309. The next prime is 1155847331. The reversal of 1155847320 is 237485511.

1155847320 is a `hidden beast` number, since 1 + 1 + 5 + 584 + 73 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1155847309) and next prime (1155847331).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 9101097 + ... + 9101223.

It is an arithmetic number, because the mean of its divisors is an integer number (16628304).

Almost surely, 2^1155847320 is an apocalyptic number.

1155847320 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 1155847320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1995396480).

1155847320 is an abundant number, since it is smaller than the sum of its proper divisors (2834945640).

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

1155847320 is a wasteful number, since it uses less digits than its factorization.

1155847320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 1155847320 is about 33997.7546317400. The cubic root of 1155847320 is about 1049.4622552598.

The spelling of 1155847320 in words is "one billion, one hundred fifty-five million, eight hundred forty-seven thousand, three hundred twenty".