118821728 has 24 divisors (see below), whose sum is σ = 239373288. Its totient is φ = 58028544.

The previous prime is 118821701. The next prime is 118821733. The reversal of 118821728 is 827128811.

It is a junction number, because it is equal to n+sod(n) for n = 118821691 and 118821700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41801 + ... + 44552.

It is an arithmetic number, because the mean of its divisors is an integer number (9973887).

Almost surely, 2^118821728 is an apocalyptic number.

It is an amenable number.

118821728 is an abundant number, since it is smaller than the sum of its proper divisors (120551560).

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

118821728 is an equidigital number, since it uses as much as digits as its factorization.

118821728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86406 (or 86398 counting only the distinct ones).

The product of its digits is 14336, while the sum is 38.

The square root of 118821728 is about 10900.5379683757. The cubic root of 118821728 is about 491.6227305883.

The spelling of 118821728 in words is "one hundred eighteen million, eight hundred twenty-one thousand, seven hundred twenty-eight".