120805620 has 96 divisors (see below), whose sum is σ = 370392960. Its totient is φ = 29237760.

The previous prime is 120805609. The next prime is 120805649. The reversal of 120805620 is 26508021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46311 + ... + 48849.

It is an arithmetic number, because the mean of its divisors is an integer number (3858260).

Almost surely, 2^120805620 is an apocalyptic number.

120805620 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 120805620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185196480).

120805620 is an abundant number, since it is smaller than the sum of its proper divisors (249587340).

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

120805620 is a wasteful number, since it uses less digits than its factorization.

120805620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625 (or 2623 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 120805620 is about 10991.1609941807. The cubic root of 120805620 is about 494.3437482476.

The spelling of 120805620 in words is "one hundred twenty million, eight hundred five thousand, six hundred twenty".