2812763021 has 8 divisors (see below), whose sum is σ = 3056313600. Its totient is φ = 2578763520.

The previous prime is 2812762993. The next prime is 2812763047. The reversal of 2812763021 is 1203672182.

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

It is not a de Polignac number, because 2812763021 - 2⁶ = 2812762957 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 (2812763071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2387156 + ... + 2388333.

It is an arithmetic number, because the mean of its divisors is an integer number (382039200).

Almost surely, 2^2812763021 is an apocalyptic number.

It is an amenable number.

2812763021 is a deficient number, since it is larger than the sum of its proper divisors (243550579).

2812763021 is a wasteful number, since it uses less digits than its factorization.

2812763021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4775539.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2812763021 is about 53035.4883167865. The cubic root of 2812763021 is about 1411.5980441255.

The spelling of 2812763021 in words is "two billion, eight hundred twelve million, seven hundred sixty-three thousand, twenty-one".