1155498432 has 112 divisors (see below), whose sum is σ = 3531485952. Its totient is φ = 329543680.

The previous prime is 1155498401. The next prime is 1155498499. The reversal of 1155498432 is 2348945511.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19813 + ... + 51995.

Almost surely, 2^1155498432 is an apocalyptic number.

1155498432 is a gapful number since it is divisible by the number (12) 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 1155498432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1765742976).

1155498432 is an abundant number, since it is smaller than the sum of its proper divisors (2375987520).

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

1155498432 is a wasteful number, since it uses less digits than its factorization.

1155498432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32226 (or 32216 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The square root of 1155498432 is about 33992.6231997473. The cubic root of 1155498432 is about 1049.3566526060.

The spelling of 1155498432 in words is "one billion, one hundred fifty-five million, four hundred ninety-eight thousand, four hundred thirty-two".