2800013 has 8 divisors (see below), whose sum is σ = 2962176. Its totient is φ = 2642400.

The previous prime is 2800003. The next prime is 2800033. The reversal of 2800013 is 3100082.

2800013 = T₇₂ + T₇₃ + ... + T₂₅₇.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2800013 - 2⁸ = 2799757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2800003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170 + ... + 2372.

It is an arithmetic number, because the mean of its divisors is an integer number (370272).

2^2800013 is an apocalyptic number.

It is an amenable number.

2800013 is a deficient number, since it is larger than the sum of its proper divisors (162163).

2800013 is a wasteful number, since it uses less digits than its factorization.

2800013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2800013 is about 1673.3239375566. The cubic root of 2800013 is about 140.9461927716.

Adding to 2800013 its reverse (3100082), we get a palindrome (5900095).

The spelling of 2800013 in words is "two million, eight hundred thousand, thirteen".