2678293021 has 4 divisors (see below), whose sum is σ = 2678467132. Its totient is φ = 2678118912.

The previous prime is 2678292959. The next prime is 2678293031. The reversal of 2678293021 is 1203928762.

2678293021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 923856025 + 1754436996 = 30395^2 + 41886^2 .

It is a cyclic number.

It is not a de Polignac number, because 2678293021 - 2¹⁹ = 2677768733 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 (2678293031) 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, 61476 + ... + 95581.

It is an arithmetic number, because the mean of its divisors is an integer number (669616783).

Almost surely, 2^2678293021 is an apocalyptic number.

It is an amenable number.

2678293021 is a deficient number, since it is larger than the sum of its proper divisors (174111).

2678293021 is a wasteful number, since it uses less digits than its factorization.

2678293021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174110.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 2678293021 is about 51752.2272081115. The cubic root of 2678293021 is about 1388.7349428918.

The spelling of 2678293021 in words is "two billion, six hundred seventy-eight million, two hundred ninety-three thousand, twenty-one".