100440432 has 80 divisors (see below), whose sum is σ = 295060480. Its totient is φ = 32695488.

The previous prime is 100440421. The next prime is 100440497. The reversal of 100440432 is 234044001.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15873 + ... + 21279.

It is an arithmetic number, because the mean of its divisors is an integer number (3688256).

Almost surely, 2^100440432 is an apocalyptic number.

100440432 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 100440432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147530240).

100440432 is an abundant number, since it is smaller than the sum of its proper divisors (194620048).

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

100440432 is a wasteful number, since it uses less digits than its factorization.

100440432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5467 (or 5455 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 100440432 is about 10021.9974057071. The cubic root of 100440432 is about 464.8393201341.

Adding to 100440432 its reverse (234044001), we get a palindrome (334484433).

The spelling of 100440432 in words is "one hundred million, four hundred forty thousand, four hundred thirty-two".