2805312672 has 36 divisors (see below), whose sum is σ = 7977608730. Its totient is φ = 935104128.

The previous prime is 2805312659. The next prime is 2805312677. The reversal of 2805312672 is 2762135082.

2805312672 is a `hidden beast` number, since 280 + 5 + 312 + 67 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2028241296 + 777071376 = 45036^2 + 27876^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (2805312677) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4870047 + ... + 4870622.

Almost surely, 2^2805312672 is an apocalyptic number.

It is an amenable number.

2805312672 is an abundant number, since it is smaller than the sum of its proper divisors (5172296058).

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

2805312672 is a wasteful number, since it uses less digits than its factorization.

2805312672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9740685 (or 9740674 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 2805312672 is about 52965.2024635043. The cubic root of 2805312672 is about 1410.3506114665.

The spelling of 2805312672 in words is "two billion, eight hundred five million, three hundred twelve thousand, six hundred seventy-two".