1155623080 has 32 divisors (see below), whose sum is σ = 2626966440. Its totient is φ = 457482240.

The previous prime is 1155623071. The next prime is 1155623087. The reversal of 1155623080 is 803265511.

It can be written as a sum of positive squares in 4 ways, for example, as 1089396036 + 66227044 = 33006^2 + 8138^2 .

It is not an unprimeable number, because it can be changed into a prime (1155623087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145041 + ... + 152800.

Almost surely, 2^1155623080 is an apocalyptic number.

1155623080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155623080 is an abundant number, since it is smaller than the sum of its proper divisors (1471343360).

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

1155623080 is a wasteful number, since it uses less digits than its factorization.

1155623080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297949 (or 297945 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1155623080 is about 33994.4566069234. The cubic root of 1155623080 is about 1049.3943839438.

Adding to 1155623080 its reverse (803265511), we get a palindrome (1958888591).

The spelling of 1155623080 in words is "one billion, one hundred fifty-five million, six hundred twenty-three thousand, eighty".