100440680 has 16 divisors (see below), whose sum is σ = 225991620. Its totient is φ = 40176256.

The previous prime is 100440677. The next prime is 100440719. The reversal of 100440680 is 86044001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 100440484 + 196 = 10022^2 + 14^2 .

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, 1255469 + ... + 1255548.

Almost surely, 2^100440680 is an apocalyptic number.

100440680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100440680 is an abundant number, since it is smaller than the sum of its proper divisors (125550940).

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

100440680 is a wasteful number, since it uses less digits than its factorization.

100440680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511028 (or 2511024 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 100440680 is about 10022.0097784826. The cubic root of 100440680 is about 464.8397027160.

Adding to 100440680 its reverse (86044001), we get a palindrome (186484681).

The spelling of 100440680 in words is "one hundred million, four hundred forty thousand, six hundred eighty".