1123554432 has 512 divisors, whose sum is σ = 4167475200. Its totient is φ = 258785280.

The previous prime is 1123554391. The next prime is 1123554437. The reversal of 1123554432 is 2344553211.

It is a self number, because there is not a number n which added to its sum of digits gives 1123554432.

It is not an unprimeable number, because it can be changed into a prime (1123554437) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14222169 + ... + 14222247.

It is an arithmetic number, because the mean of its divisors is an integer number (8139600).

Almost surely, 2^1123554432 is an apocalyptic number.

1123554432 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 1123554432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2083737600).

1123554432 is an abundant number, since it is smaller than the sum of its proper divisors (3043920768).

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

1123554432 is a wasteful number, since it uses less digits than its factorization.

1123554432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 152 counting only the distinct ones).

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

The square root of 1123554432 is about 33519.4634801931. The cubic root of 1123554432 is about 1039.5962535351.

It can be divided in two parts, 1123 and 554432, that added together give a palindrome (555555).

The spelling of 1123554432 in words is "one billion, one hundred twenty-three million, five hundred fifty-four thousand, four hundred thirty-two".