115403940 has 60 divisors (see below), whose sum is σ = 362031516. Its totient is φ = 30773952.

The previous prime is 115403933. The next prime is 115403957. The reversal of 115403940 is 49304511.

It can be written as a sum of positive squares in 2 ways, for example, as 20575296 + 94828644 = 4536^2 + 9738^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33999 + ... + 37238.

Almost surely, 2^115403940 is an apocalyptic number.

115403940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115403940 is an abundant number, since it is smaller than the sum of its proper divisors (246627576).

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

115403940 is a wasteful number, since it uses less digits than its factorization.

115403940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71258 (or 71247 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 115403940 is about 10742.6225848254. The cubic root of 115403940 is about 486.8631209946.

The spelling of 115403940 in words is "one hundred fifteen million, four hundred three thousand, nine hundred forty".