115644340 has 48 divisors (see below), whose sum is σ = 278232192. Its totient is φ = 39551616.

The previous prime is 115644301. The next prime is 115644367. The reversal of 115644340 is 43446511.

It is a super-2 number, since 2×115644340² = 26747226748071200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 115644299 and 115644308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77239 + ... + 78721.

It is an arithmetic number, because the mean of its divisors is an integer number (5796504).

Almost surely, 2^115644340 is an apocalyptic number.

115644340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115644340 is an abundant number, since it is smaller than the sum of its proper divisors (162587852).

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

115644340 is a wasteful number, since it uses less digits than its factorization.

115644340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056 (or 2054 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 115644340 is about 10753.8058379348. The cubic root of 115644340 is about 487.2009509321.

The spelling of 115644340 in words is "one hundred fifteen million, six hundred forty-four thousand, three hundred forty".