2878761 has 8 divisors (see below), whose sum is σ = 3858624. Its totient is φ = 1909040.

The previous prime is 2878751. The next prime is 2878769. The reversal of 2878761 is 1678782.

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

It is a cyclic number.

It is not a de Polignac number, because 2878761 - 2⁶ = 2878697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2878769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1845 + ... + 3026.

It is an arithmetic number, because the mean of its divisors is an integer number (482328).

2^2878761 is an apocalyptic number.

It is an amenable number.

2878761 is a deficient number, since it is larger than the sum of its proper divisors (979863).

2878761 is a wasteful number, since it uses less digits than its factorization.

2878761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5071.

The product of its digits is 37632, while the sum is 39.

The square root of 2878761 is about 1696.6911917022. The cubic root of 2878761 is about 142.2553265179.

Adding to 2878761 its sum of digits (39), we get a triangular number (2878800 = T₂₃₉₉).

The spelling of 2878761 in words is "two million, eight hundred seventy-eight thousand, seven hundred sixty-one".