1157755320 has 96 divisors (see below), whose sum is σ = 3833762400. Its totient is φ = 302904576.

The previous prime is 1157755307. The next prime is 1157755363. The reversal of 1157755320 is 235577511.

It is a happy number.

1157755320 is a `hidden beast` number, since 1 + 1 + 57 + 75 + 532 + 0 = 666.

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 23 ways as a sum of consecutive naturals, for example, 11260 + ... + 49419.

It is an arithmetic number, because the mean of its divisors is an integer number (39935025).

Almost surely, 2^1157755320 is an apocalyptic number.

1157755320 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 1157755320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1916881200).

1157755320 is an abundant number, since it is smaller than the sum of its proper divisors (2676007080).

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

1157755320 is a wasteful number, since it uses less digits than its factorization.

1157755320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60749 (or 60742 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 36.

The square root of 1157755320 is about 34025.8037377517. The cubic root of 1157755320 is about 1050.0393998821.

The spelling of 1157755320 in words is "one billion, one hundred fifty-seven million, seven hundred fifty-five thousand, three hundred twenty".