115218644 has 24 divisors (see below), whose sum is σ = 204482880. Its totient is φ = 56801216.

The previous prime is 115218643. The next prime is 115218647. The reversal of 115218644 is 446812511.

It is a self number, because there is not a number n which added to its sum of digits gives 115218644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115218643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90887 + ... + 92145.

It is an arithmetic number, because the mean of its divisors is an integer number (8520120).

Almost surely, 2^115218644 is an apocalyptic number.

It is an amenable number.

115218644 is a deficient number, since it is larger than the sum of its proper divisors (89264236).

115218644 is a wasteful number, since it uses less digits than its factorization.

115218644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567 (or 1565 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 115218644 is about 10733.9947829315. The cubic root of 115218644 is about 486.6024074369.

The spelling of 115218644 in words is "one hundred fifteen million, two hundred eighteen thousand, six hundred forty-four".