1155232080 has 120 divisors (see below), whose sum is σ = 3886751232. Its totient is φ = 307498752.

The previous prime is 1155232061. The next prime is 1155232103. The reversal of 1155232080 is 802325511.

It is a happy number.

1155232080 is a `hidden beast` number, since 1 + 1 + 552 + 32 + 0 + 80 = 666.

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

It is a super-2 number, since 2×1155232080² = 2669122317322252800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 522337 + ... + 524543.

Almost surely, 2^1155232080 is an apocalyptic number.

1155232080 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 1155232080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1943375616).

1155232080 is an abundant number, since it is smaller than the sum of its proper divisors (2731519152).

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

1155232080 is a wasteful number, since it uses less digits than its factorization.

1155232080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2953 (or 2944 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1155232080 is about 33988.7051827515. The cubic root of 1155232080 is about 1049.2760179310.

Adding to 1155232080 its reverse (802325511), we get a palindrome (1957557591).

The spelling of 1155232080 in words is "one billion, one hundred fifty-five million, two hundred thirty-two thousand, eighty".