120680388 has 48 divisors (see below), whose sum is σ = 317181760. Its totient is φ = 39673152.

The previous prime is 120680377. The next prime is 120680407. The reversal of 120680388 is 883086021.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231 + ... + 15537.

Almost surely, 2^120680388 is an apocalyptic number.

120680388 is a gapful number since it is divisible by the number (18) 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 120680388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158590880).

120680388 is an abundant number, since it is smaller than the sum of its proper divisors (196501372).

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

120680388 is a wasteful number, since it uses less digits than its factorization.

120680388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15393 (or 15385 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 120680388 is about 10985.4625756042. The cubic root of 120680388 is about 494.1728702685.

The spelling of 120680388 in words is "one hundred twenty million, six hundred eighty thousand, three hundred eighty-eight".