1155764260 has 96 divisors (see below), whose sum is σ = 2994485760. Its totient is φ = 365933568.

The previous prime is 1155764257. The next prime is 1155764279. The reversal of 1155764260 is 624675511.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87192 + ... + 99568.

It is an arithmetic number, because the mean of its divisors is an integer number (31192560).

Almost surely, 2^1155764260 is an apocalyptic number.

1155764260 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 1155764260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1497242880).

1155764260 is an abundant number, since it is smaller than the sum of its proper divisors (1838721500).

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

1155764260 is a wasteful number, since it uses less digits than its factorization.

1155764260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12445 (or 12443 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 1155764260 is about 33996.5330585341. The cubic root of 1155764260 is about 1049.4371162928.

The spelling of 1155764260 in words is "one billion, one hundred fifty-five million, seven hundred sixty-four thousand, two hundred sixty".