118905556 has 72 divisors (see below), whose sum is σ = 266710752. Its totient is φ = 45864000.

The previous prime is 118905547. The next prime is 118905557. The reversal of 118905556 is 655509811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118905557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 282226 + ... + 282646.

It is an arithmetic number, because the mean of its divisors is an integer number (3704316).

Almost surely, 2^118905556 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 118905556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133355376).

118905556 is an abundant number, since it is smaller than the sum of its proper divisors (147805196).

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

118905556 is a wasteful number, since it uses less digits than its factorization.

118905556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 40.

The square root of 118905556 is about 10904.3824217605. The cubic root of 118905556 is about 491.7383156843.

The spelling of 118905556 in words is "one hundred eighteen million, nine hundred five thousand, five hundred fifty-six".