118989420 has 48 divisors (see below), whose sum is σ = 363460608. Its totient is φ = 28845760.

The previous prime is 118989401. The next prime is 118989427. The reversal of 118989420 is 24989811.

It is not an unprimeable number, because it can be changed into a prime (118989427) 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, 89484 + ... + 90803.

It is an arithmetic number, because the mean of its divisors is an integer number (7572096).

Almost surely, 2^118989420 is an apocalyptic number.

118989420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118989420 is an abundant number, since it is smaller than the sum of its proper divisors (244471188).

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

118989420 is a wasteful number, since it uses less digits than its factorization.

118989420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180310 (or 180308 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 118989420 is about 10908.2271703517. The cubic root of 118989420 is about 491.8538960714.

It can be divided in two parts, 1189 and 89420, that added together give a palindrome (90609).

The spelling of 118989420 in words is "one hundred eighteen million, nine hundred eighty-nine thousand, four hundred twenty".