100432440 has 64 divisors (see below), whose sum is σ = 334778400. Its totient is φ = 26781696.

The previous prime is 100432439. The next prime is 100432441. The reversal of 100432440 is 44234001.

It is an interprime number because it is at equal distance from previous prime (100432439) and next prime (100432441).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100432441) 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, 45417 + ... + 47576.

Almost surely, 2^100432440 is an apocalyptic number.

100432440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100432440 is an abundant number, since it is smaller than the sum of its proper divisors (234345960).

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

100432440 is a wasteful number, since it uses less digits than its factorization.

100432440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93013 (or 93003 counting only the distinct ones).

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

The square root of 100432440 is about 10021.5986748622. The cubic root of 100432440 is about 464.8269907886.

Adding to 100432440 its reverse (44234001), we get a palindrome (144666441).

The spelling of 100432440 in words is "one hundred million, four hundred thirty-two thousand, four hundred forty".