2800052781 has 16 divisors (see below), whose sum is σ = 3931276800. Its totient is φ = 1767834288.

The previous prime is 2800052771. The next prime is 2800052789. The reversal of 2800052781 is 1872500082.

It is not a de Polignac number, because 2800052781 - 2⁷ = 2800052653 is a prime.

It is a super-2 number, since 2×2800052781² = 15680591152771667922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2800052789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198790 + ... + 212408.

It is an arithmetic number, because the mean of its divisors is an integer number (245704800).

Almost surely, 2^2800052781 is an apocalyptic number.

It is an amenable number.

2800052781 is a deficient number, since it is larger than the sum of its proper divisors (1131224019).

2800052781 is a wasteful number, since it uses less digits than its factorization.

2800052781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17248.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 2800052781 is about 52915.5249525128. The cubic root of 2800052781 is about 1409.4686026305.

The spelling of 2800052781 in words is "two billion, eight hundred million, fifty-two thousand, seven hundred eighty-one".