120551680 has 72 divisors (see below), whose sum is σ = 294372792. Its totient is φ = 47284224.

The previous prime is 120551659. The next prime is 120551687. The reversal of 120551680 is 86155021.

It can be written as a sum of positive squares in 4 ways, for example, as 21827584 + 98724096 = 4672^2 + 9936^2 .

It is not an unprimeable number, because it can be changed into a prime (120551687) 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, 66952 + ... + 68728.

It is an arithmetic number, because the mean of its divisors is an integer number (4088511).

Almost surely, 2^120551680 is an apocalyptic number.

120551680 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 120551680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147186396).

120551680 is an abundant number, since it is smaller than the sum of its proper divisors (173821112).

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

120551680 is an equidigital number, since it uses as much as digits as its factorization.

120551680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851 (or 1837 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 120551680 is about 10979.6029072093. The cubic root of 120551680 is about 493.9971260904.

The spelling of 120551680 in words is "one hundred twenty million, five hundred fifty-one thousand, six hundred eighty".