2176328385 has 144 divisors (see below), whose sum is σ = 4948876800. Its totient is φ = 904115520.

The previous prime is 2176328351. The next prime is 2176328393. The reversal of 2176328385 is 5838236712.

2176328385 is a `hidden beast` number, since 2 + 1 + 7 + 632 + 8 + 3 + 8 + 5 = 666.

It is not a de Polignac number, because 2176328385 - 2¹⁷ = 2176197313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2176328385.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 799056 + ... + 801774.

It is an arithmetic number, because the mean of its divisors is an integer number (34367200).

Almost surely, 2^2176328385 is an apocalyptic number.

It is an amenable number.

2176328385 is an abundant number, since it is smaller than the sum of its proper divisors (2772548415).

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

2176328385 is a wasteful number, since it uses less digits than its factorization.

2176328385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2769 (or 2745 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 2176328385 is about 46651.1348736555. The cubic root of 2176328385 is about 1295.9099035018.

The spelling of 2176328385 in words is "two billion, one hundred seventy-six million, three hundred twenty-eight thousand, three hundred eighty-five".