2823128047 has 4 divisors (see below), whose sum is σ = 2920477320. Its totient is φ = 2725778776.

The previous prime is 2823128029. The next prime is 2823128071. The reversal of 2823128047 is 7408213282.

2823128047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2823128047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2823127997 and 2823128015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2823128017) 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, 48674593 + ... + 48674650.

It is an arithmetic number, because the mean of its divisors is an integer number (730119330).

Almost surely, 2^2823128047 is an apocalyptic number.

2823128047 is a deficient number, since it is larger than the sum of its proper divisors (97349273).

2823128047 is an equidigital number, since it uses as much as digits as its factorization.

2823128047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97349272.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 2823128047 is about 53133.1162929486. The cubic root of 2823128047 is about 1413.3298306262.

The spelling of 2823128047 in words is "two billion, eight hundred twenty-three million, one hundred twenty-eight thousand, forty-seven".