1156533260 has 12 divisors (see below), whose sum is σ = 2428719888. Its totient is φ = 462613296.

The previous prime is 1156533229. The next prime is 1156533269. The reversal of 1156533260 is 623356511.

It is not an unprimeable number, because it can be changed into a prime (1156533269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28913312 + ... + 28913351.

It is an arithmetic number, because the mean of its divisors is an integer number (202393324).

Almost surely, 2^1156533260 is an apocalyptic number.

1156533260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1156533260 is an abundant number, since it is smaller than the sum of its proper divisors (1272186628).

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

1156533260 is a wasteful number, since it uses less digits than its factorization.

1156533260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57826672 (or 57826670 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 1156533260 is about 34007.8411546514. The cubic root of 1156533260 is about 1049.6698160600.

Adding to 1156533260 its reverse (623356511), we get a palindrome (1779889771).

The spelling of 1156533260 in words is "one billion, one hundred fifty-six million, five hundred thirty-three thousand, two hundred sixty".