115345640 has 16 divisors (see below), whose sum is σ = 259527780. Its totient is φ = 46138240.

The previous prime is 115345627. The next prime is 115345717. The reversal of 115345640 is 46543511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 107039716 + 8305924 = 10346^2 + 2882^2 .

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, 1441781 + ... + 1441860.

Almost surely, 2^115345640 is an apocalyptic number.

115345640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115345640 is an abundant number, since it is smaller than the sum of its proper divisors (144182140).

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

115345640 is a wasteful number, since it uses less digits than its factorization.

115345640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883652 (or 2883648 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 115345640 is about 10739.9087519401. The cubic root of 115345640 is about 486.7811223470.

The spelling of 115345640 in words is "one hundred fifteen million, three hundred forty-five thousand, six hundred forty".