2878681 has 8 divisors (see below), whose sum is σ = 3140480. Its totient is φ = 2622672.

The previous prime is 2878679. The next prime is 2878693. The reversal of 2878681 is 1868782.

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

It is not a de Polignac number, because 2878681 - 2¹ = 2878679 is a prime.

It is a super-2 number, since 2×2878681² = 16573608599522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878181) 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, 375 + ... + 2428.

It is an arithmetic number, because the mean of its divisors is an integer number (392560).

2^2878681 is an apocalyptic number.

It is an amenable number.

2878681 is a deficient number, since it is larger than the sum of its proper divisors (261799).

2878681 is a wasteful number, since it uses less digits than its factorization.

2878681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895.

The product of its digits is 43008, while the sum is 40.

The square root of 2878681 is about 1696.6676162407. The cubic root of 2878681 is about 142.2540087598.

The spelling of 2878681 in words is "two million, eight hundred seventy-eight thousand, six hundred eighty-one".