120247780 has 48 divisors (see below), whose sum is σ = 265446720. Its totient is φ = 45698688.

The previous prime is 120247763. The next prime is 120247837. The reversal of 120247780 is 87742021.

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, 29931 + ... + 33709.

It is an arithmetic number, because the mean of its divisors is an integer number (5530140).

Almost surely, 2^120247780 is an apocalyptic number.

120247780 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 120247780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132723360).

120247780 is an abundant number, since it is smaller than the sum of its proper divisors (145198940).

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

120247780 is a wasteful number, since it uses less digits than its factorization.

120247780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3868 (or 3866 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 120247780 is about 10965.7548759764. The cubic root of 120247780 is about 493.5816692651.

The spelling of 120247780 in words is "one hundred twenty million, two hundred forty-seven thousand, seven hundred eighty".