100643532 has 48 divisors (see below), whose sum is σ = 269673600. Its totient is φ = 28892160.

The previous prime is 100643531. The next prime is 100643549. The reversal of 100643532 is 235346001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (100643531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17557 + ... + 22572.

It is an arithmetic number, because the mean of its divisors is an integer number (5618200).

Almost surely, 2^100643532 is an apocalyptic number.

100643532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100643532 is an abundant number, since it is smaller than the sum of its proper divisors (169030068).

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

100643532 is a wasteful number, since it uses less digits than its factorization.

100643532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40166 (or 40164 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 100643532 is about 10032.1249992213. The cubic root of 100643532 is about 465.1524254607.

Adding to 100643532 its reverse (235346001), we get a palindrome (335989533).

The spelling of 100643532 in words is "one hundred million, six hundred forty-three thousand, five hundred thirty-two".