115820644 has 9 divisors (see below), whose sum is σ = 202723801. Its totient is φ = 57899560.

The previous prime is 115820611. The next prime is 115820657. The reversal of 115820644 is 446028511.

The square root of 115820644 is 10762.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 37675044 + 78145600 = 6138^2 + 8840^2 .

It is a Duffinian number.

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 2 ways as a sum of consecutive naturals, for example, 18834 + ... + 24214.

Almost surely, 2^115820644 is an apocalyptic number.

115820644 is the 10762-nd square number.

It is an amenable number.

115820644 is a deficient number, since it is larger than the sum of its proper divisors (86903157).

115820644 is an frugal number, since it uses more digits than its factorization.

115820644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10766 (or 5383 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The cubic root of 115820644 is about 487.4484104075.

The spelling of 115820644 in words is "one hundred fifteen million, eight hundred twenty thousand, six hundred forty-four".