1145532432 has 160 divisors (see below), whose sum is σ = 3343785984. Its totient is φ = 334886400.

The previous prime is 1145532397. The next prime is 1145532463. The reversal of 1145532432 is 2342355411.

It is a self number, because there is not a number n which added to its sum of digits gives 1145532432.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3731223 + ... + 3731529.

Almost surely, 2^1145532432 is an apocalyptic number.

1145532432 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 1145532432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1671892992).

1145532432 is an abundant number, since it is smaller than the sum of its proper divisors (2198253552).

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

1145532432 is a wasteful number, since it uses less digits than its factorization.

1145532432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 551 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 1145532432 is about 33845.7151202335. The cubic root of 1145532432 is about 1046.3310898097.

Adding to 1145532432 its reverse (2342355411), we get a palindrome (3487887843).

The spelling of 1145532432 in words is "one billion, one hundred forty-five million, five hundred thirty-two thousand, four hundred thirty-two".