115640445 has 32 divisors (see below), whose sum is σ = 192130560. Its totient is φ = 59351040.

The previous prime is 115640417. The next prime is 115640489. The reversal of 115640445 is 544046511.

It is not a de Polignac number, because 115640445 - 2¹⁰ = 115639421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41661 + ... + 44349.

It is an arithmetic number, because the mean of its divisors is an integer number (6004080).

Almost surely, 2^115640445 is an apocalyptic number.

115640445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115640445 is a deficient number, since it is larger than the sum of its proper divisors (76490115).

115640445 is a wasteful number, since it uses less digits than its factorization.

115640445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 115640445 is about 10753.6247377338. The cubic root of 115640445 is about 487.1954810895.

Adding to 115640445 its reverse (544046511), we get a palindrome (659686956).

The spelling of 115640445 in words is "one hundred fifteen million, six hundred forty thousand, four hundred forty-five".