1155233520 has 120 divisors (see below), whose sum is σ = 4433915616. Its totient is φ = 264052224.

The previous prime is 1155233501. The next prime is 1155233533. The reversal of 1155233520 is 253325511.

It is a happy number.

1155233520 is a `hidden beast` number, since 115 + 5 + 23 + 3 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109567 + ... + 119646.

Almost surely, 2^1155233520 is an apocalyptic number.

1155233520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155233520 is an abundant number, since it is smaller than the sum of its proper divisors (3278682096).

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

1155233520 is a wasteful number, since it uses less digits than its factorization.

1155233520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229239 (or 229230 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1155233520 is about 33988.7263662527. The cubic root of 1155233520 is about 1049.2764539060.

The spelling of 1155233520 in words is "one billion, one hundred fifty-five million, two hundred thirty-three thousand, five hundred twenty".