2878546021 has 8 divisors (see below), whose sum is σ = 3103358720. Its totient is φ = 2654217072.

The previous prime is 2878545959. The next prime is 2878546031. The reversal of 2878546021 is 1206458782.

It is a happy number.

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

It is not a de Polignac number, because 2878546021 - 2²⁹ = 2341675109 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 (2878546031) 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, 108525 + ... + 132418.

It is an arithmetic number, because the mean of its divisors is an integer number (387919840).

Almost surely, 2^2878546021 is an apocalyptic number.

It is an amenable number.

2878546021 is a deficient number, since it is larger than the sum of its proper divisors (224812699).

2878546021 is a wasteful number, since it uses less digits than its factorization.

2878546021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241875.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 2878546021 is about 53652.0831002861. The cubic root of 2878546021 is about 1422.5178533366.

The spelling of 2878546021 in words is "two billion, eight hundred seventy-eight million, five hundred forty-six thousand, twenty-one".