115397040 has 80 divisors (see below), whose sum is σ = 390260736. Its totient is φ = 27974400.

The previous prime is 115397033. The next prime is 115397047. The reversal of 115397040 is 40793511.

It is an interprime number because it is at equal distance from previous prime (115397033) and next prime (115397047).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 115396989 and 115397007.

It is not an unprimeable number, because it can be changed into a prime (115397047) 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, 19216 + ... + 24495.

Almost surely, 2^115397040 is an apocalyptic number.

115397040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115397040 is an abundant number, since it is smaller than the sum of its proper divisors (274863696).

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

115397040 is a wasteful number, since it uses less digits than its factorization.

115397040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43738 (or 43732 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 115397040 is about 10742.3014293958. The cubic root of 115397040 is about 486.8534176214.

The spelling of 115397040 in words is "one hundred fifteen million, three hundred ninety-seven thousand, forty".