100234440 has 96 divisors (see below), whose sum is σ = 337030200. Its totient is φ = 25804800.

The previous prime is 100234427. The next prime is 100234441. The reversal of 100234440 is 44432001.

It can be written as a sum of positive squares in 4 ways, for example, as 91126116 + 9108324 = 9546^2 + 3018^2 .

It is a super-2 number, since 2×100234440² = 20093885924227200, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (100234441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5640 + ... + 15240.

Almost surely, 2^100234440 is an apocalyptic number.

100234440 is a gapful number since it is divisible by the number (10) 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 100234440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168515100).

100234440 is an abundant number, since it is smaller than the sum of its proper divisors (236795760).

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

100234440 is a wasteful number, since it uses less digits than its factorization.

100234440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9647 (or 9640 counting only the distinct ones).

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

The square root of 100234440 is about 10011.7151377773. The cubic root of 100234440 is about 464.5213249680.

Adding to 100234440 its reverse (44432001), we get a palindrome (144666441).

The spelling of 100234440 in words is "one hundred million, two hundred thirty-four thousand, four hundred forty".