2120384660 has 12 divisors (see below), whose sum is σ = 4452807828. Its totient is φ = 848153856.

The previous prime is 2120384647. The next prime is 2120384671. The reversal of 2120384660 is 664830212.

It can be written as a sum of positive squares in 2 ways, for example, as 780531844 + 1339852816 = 27938^2 + 36604^2 .

It is a super-2 number, since 2×2120384660² = 8992062212726631200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 53009597 + ... + 53009636.

It is an arithmetic number, because the mean of its divisors is an integer number (371067319).

Almost surely, 2^2120384660 is an apocalyptic number.

2120384660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120384660 is an abundant number, since it is smaller than the sum of its proper divisors (2332423168).

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

2120384660 is a wasteful number, since it uses less digits than its factorization.

2120384660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106019242 (or 106019240 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 2120384660 is about 46047.6346840964. The cubic root of 2120384660 is about 1284.7093489908.

The spelling of 2120384660 in words is "two billion, one hundred twenty million, three hundred eighty-four thousand, six hundred sixty".