120556836 has 60 divisors (see below), whose sum is σ = 319027632. Its totient is φ = 39692592.

The previous prime is 120556831. The next prime is 120556847. The reversal of 120556836 is 638655021.

120556836 is a `hidden beast` number, since 1 + 20 + 556 + 83 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 120556836.

It is not an unprimeable number, because it can be changed into a prime (120556831) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24651 + ... + 29133.

Almost surely, 2^120556836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120556836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159513816).

120556836 is an abundant number, since it is smaller than the sum of its proper divisors (198470796).

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

120556836 is a wasteful number, since it uses less digits than its factorization.

120556836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4582 (or 4571 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 120556836 is about 10979.8377037186. The cubic root of 120556836 is about 494.0041687487.

It can be divided in two parts, 1205568 and 36, that added together give a square (1205604 = 1098²).

The spelling of 120556836 in words is "one hundred twenty million, five hundred fifty-six thousand, eight hundred thirty-six".