100115540 has 48 divisors (see below), whose sum is σ = 248572800. Its totient is φ = 33140352.

The previous prime is 100115539. The next prime is 100115549. The reversal of 100115540 is 45511001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100115549) 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, 8270 + ... + 16389.

It is an arithmetic number, because the mean of its divisors is an integer number (5178600).

Almost surely, 2^100115540 is an apocalyptic number.

100115540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100115540 is an abundant number, since it is smaller than the sum of its proper divisors (148457260).

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

100115540 is a wasteful number, since it uses less digits than its factorization.

100115540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24704 (or 24702 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 100115540 is about 10005.7753322769. The cubic root of 100115540 is about 464.3375776158.

Adding to 100115540 its reverse (45511001), we get a palindrome (145626541).

It can be divided in two parts, 10011 and 5540, that added together give a palindrome (15551).

The spelling of 100115540 in words is "one hundred million, one hundred fifteen thousand, five hundred forty".