1023543432 has 128 divisors (see below), whose sum is σ = 2954880000. Its totient is φ = 328002048.

The previous prime is 1023543427. The next prime is 1023543457. The reversal of 1023543432 is 2343453201.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1023543396 and 1023543405.

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, 710569 + ... + 712007.

It is an arithmetic number, because the mean of its divisors is an integer number (23085000).

Almost surely, 2^1023543432 is an apocalyptic number.

1023543432 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 1023543432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1477440000).

1023543432 is an abundant number, since it is smaller than the sum of its proper divisors (1931336568).

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

1023543432 is a wasteful number, since it uses less digits than its factorization.

1023543432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580 (or 1570 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 1023543432 is about 31992.8653296325. The cubic root of 1023543432 is about 1007.7870156585.

Adding to 1023543432 its reverse (2343453201), we get a palindrome (3366996633).

The spelling of 1023543432 in words is "one billion, twenty-three million, five hundred forty-three thousand, four hundred thirty-two".