118534440 has 64 divisors (see below), whose sum is σ = 357177600. Its totient is φ = 31469312.

The previous prime is 118534411. The next prime is 118534441. The reversal of 118534440 is 44435811.

It is a super-2 number, since 2×118534440² = 28100826932227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 118534398 and 118534407.

It is not an unprimeable number, because it can be changed into a prime (118534441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26614 + ... + 30746.

It is an arithmetic number, because the mean of its divisors is an integer number (5580900).

Almost surely, 2^118534440 is an apocalyptic number.

118534440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118534440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178588800).

118534440 is an abundant number, since it is smaller than the sum of its proper divisors (238643160).

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

118534440 is a wasteful number, since it uses less digits than its factorization.

118534440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4386 (or 4382 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 118534440 is about 10887.3522952093. The cubic root of 118534440 is about 491.2261945486.

The spelling of 118534440 in words is "one hundred eighteen million, five hundred thirty-four thousand, four hundred forty".