118723644 has 120 divisors (see below), whose sum is σ = 339802848. Its totient is φ = 35925120.

The previous prime is 118723643. The next prime is 118723663. The reversal of 118723644 is 446327811.

118723644 is a `hidden beast` number, since 1 + 1 + 8 + 7 + 2 + 3 + 644 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 118723599 and 118723608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118723643) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 298854 + ... + 299250.

Almost surely, 2^118723644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118723644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169901424).

118723644 is an abundant number, since it is smaller than the sum of its proper divisors (221079204).

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

118723644 is a wasteful number, since it uses less digits than its factorization.

118723644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 486 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 118723644 is about 10896.0379955285. The cubic root of 118723644 is about 491.4874197632.

The spelling of 118723644 in words is "one hundred eighteen million, seven hundred twenty-three thousand, six hundred forty-four".