118388720 has 20 divisors (see below), whose sum is σ = 275253960. Its totient is φ = 47355456.

The previous prime is 118388719. The next prime is 118388729. The reversal of 118388720 is 27883811.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118388729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 739850 + ... + 740009.

It is an arithmetic number, because the mean of its divisors is an integer number (13762698).

Almost surely, 2^118388720 is an apocalyptic number.

118388720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118388720 is an abundant number, since it is smaller than the sum of its proper divisors (156865240).

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

118388720 is a wasteful number, since it uses less digits than its factorization.

118388720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479872 (or 1479866 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 118388720 is about 10880.6580683339. The cubic root of 118388720 is about 491.0248161307.

The spelling of 118388720 in words is "one hundred eighteen million, three hundred eighty-eight thousand, seven hundred twenty".