118736820 has 192 divisors, whose sum is σ = 392878080. Its totient is φ = 29721600.

The previous prime is 118736819. The next prime is 118736837. The reversal of 118736820 is 28637811.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 686254 + ... + 686426.

It is an arithmetic number, because the mean of its divisors is an integer number (2046240).

Almost surely, 2^118736820 is an apocalyptic number.

118736820 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 118736820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196439040).

118736820 is an abundant number, since it is smaller than the sum of its proper divisors (274141260).

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

118736820 is a wasteful number, since it uses less digits than its factorization.

118736820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 118736820 is about 10896.6426021963. The cubic root of 118736820 is about 491.5056009175.

Subtracting from 118736820 its reverse (28637811), we obtain a palindrome (90099009).

The spelling of 118736820 in words is "one hundred eighteen million, seven hundred thirty-six thousand, eight hundred twenty".