120489636 has 24 divisors (see below), whose sum is σ = 281322720. Its totient is φ = 40137472.

The previous prime is 120489631. The next prime is 120489641. The reversal of 120489636 is 636984021.

It is an interprime number because it is at equal distance from previous prime (120489631) and next prime (120489641).

It is a junction number, because it is equal to n+sod(n) for n = 120489594 and 120489603.

It is not an unprimeable number, because it can be changed into a prime (120489631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29995 + ... + 33773.

It is an arithmetic number, because the mean of its divisors is an integer number (11721780).

Almost surely, 2^120489636 is an apocalyptic number.

It is an amenable number.

120489636 is an abundant number, since it is smaller than the sum of its proper divisors (160833084).

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

120489636 is a wasteful number, since it uses less digits than its factorization.

120489636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6443 (or 6441 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 120489636 is about 10976.7771226349. Note that the first 3 decimals coincide. The cubic root of 120489636 is about 493.9123635019.

The spelling of 120489636 in words is "one hundred twenty million, four hundred eighty-nine thousand, six hundred thirty-six".