2823128247 has 4 divisors (see below), whose sum is σ = 3764171000. Its totient is φ = 1882085496.

The previous prime is 2823128237. The next prime is 2823128257. The reversal of 2823128247 is 7428213282.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2823128237) and next prime (2823128257).

It is not a de Polignac number, because 2823128247 - 2¹⁵ = 2823095479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2823128237) 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, 470521372 + ... + 470521377.

It is an arithmetic number, because the mean of its divisors is an integer number (941042750).

Almost surely, 2^2823128247 is an apocalyptic number.

2823128247 is a deficient number, since it is larger than the sum of its proper divisors (941042753).

2823128247 is an equidigital number, since it uses as much as digits as its factorization.

2823128247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941042752.

The product of its digits is 86016, while the sum is 39.

The square root of 2823128247 is about 53133.1181750140. The cubic root of 2823128247 is about 1413.3298640013.

The spelling of 2823128247 in words is "two billion, eight hundred twenty-three million, one hundred twenty-eight thousand, two hundred forty-seven".