2800247 has 2 divisors, whose sum is σ = 2800248. Its totient is φ = 2800246.

The previous prime is 2800241. The next prime is 2800249. The reversal of 2800247 is 7420082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2800247 - 2⁸ = 2799991 is a prime.

It is a super-2 number, since 2×2800247² = 15682766522018, which contains 22 as substring.

Together with 2800249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2800241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1400123 + 1400124.

It is an arithmetic number, because the mean of its divisors is an integer number (1400124).

2^2800247 is an apocalyptic number.

2800247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2800247 is an equidigital number, since it uses as much as digits as its factorization.

2800247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 2800247 is about 1673.3938568072. The cubic root of 2800247 is about 140.9501190023.

The spelling of 2800247 in words is "two million, eight hundred thousand, two hundred forty-seven".