9780120860 has 12 divisors (see below), whose sum is σ = 20538253848. Its totient is φ = 3912048336.

The previous prime is 9780120829. The next prime is 9780120869. The reversal of 9780120860 is 680210879.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9780120869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244503002 + ... + 244503041.

It is an arithmetic number, because the mean of its divisors is an integer number (1711521154).

Almost surely, 2^9780120860 is an apocalyptic number.

It is an amenable number.

9780120860 is an abundant number, since it is smaller than the sum of its proper divisors (10758132988).

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

9780120860 is a wasteful number, since it uses less digits than its factorization.

9780120860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489006052 (or 489006050 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 9780120860 is about 98894.4935777518. The cubic root of 9780120860 is about 2138.5270135523.

The spelling of 9780120860 in words is "nine billion, seven hundred eighty million, one hundred twenty thousand, eight hundred sixty".