2800063 has 4 divisors (see below), whose sum is σ = 3200080. Its totient is φ = 2400048.

The previous prime is 2800051. The next prime is 2800069. The reversal of 2800063 is 3600082.

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

It is not a de Polignac number, because 2800063 - 2⁹ = 2799551 is a prime.

It is a Duffinian number.

2800063 is a modest number, since divided by 63 gives 28 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 2800063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2800069) 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, 199998 + ... + 200011.

It is an arithmetic number, because the mean of its divisors is an integer number (800020).

2^2800063 is an apocalyptic number.

2800063 is a deficient number, since it is larger than the sum of its proper divisors (400017).

2800063 is an equidigital number, since it uses as much as digits as its factorization.

2800063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400016.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2800063 is about 1673.3388778129. The cubic root of 2800063 is about 140.9470317282.

Adding to 2800063 its sum of digits (19), we get a palindrome (2800082).

The spelling of 2800063 in words is "two million, eight hundred thousand, sixty-three".