100443380 has 12 divisors (see below), whose sum is σ = 210931140. Its totient is φ = 40177344.

The previous prime is 100443377. The next prime is 100443397. The reversal of 100443380 is 83344001.

It can be written as a sum of positive squares in 2 ways, for example, as 26173456 + 74269924 = 5116^2 + 8618^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2511065 + ... + 2511104.

It is an arithmetic number, because the mean of its divisors is an integer number (17577595).

Almost surely, 2^100443380 is an apocalyptic number.

100443380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100443380 is an abundant number, since it is smaller than the sum of its proper divisors (110487760).

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

100443380 is a wasteful number, since it uses less digits than its factorization.

100443380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5022178 (or 5022176 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 100443380 is about 10022.1444810978. The cubic root of 100443380 is about 464.8438678808.

Adding to 100443380 its reverse (83344001), we get a palindrome (183787381).

The spelling of 100443380 in words is "one hundred million, four hundred forty-three thousand, three hundred eighty".