2878260621 has 8 divisors (see below), whose sum is σ = 3840962784. Its totient is φ = 1917199440.

The previous prime is 2878260613. The next prime is 2878260631. The reversal of 2878260621 is 1260628782.

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 2878260621 - 2³ = 2878260613 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878260631) 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 7 ways as a sum of consecutive naturals, for example, 406146 + ... + 413171.

It is an arithmetic number, because the mean of its divisors is an integer number (480120348).

Almost surely, 2^2878260621 is an apocalyptic number.

It is an amenable number.

2878260621 is a deficient number, since it is larger than the sum of its proper divisors (962702163).

2878260621 is a wasteful number, since it uses less digits than its factorization.

2878260621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820491.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 2878260621 is about 53649.4233053814. The cubic root of 2878260621 is about 1422.4708388589.

The spelling of 2878260621 in words is "two billion, eight hundred seventy-eight million, two hundred sixty thousand, six hundred twenty-one".