2878586 has 4 divisors (see below), whose sum is σ = 4317882. Its totient is φ = 1439292.

The previous prime is 2878573. The next prime is 2878591. The reversal of 2878586 is 6858782.

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

It can be written as a sum of positive squares in only one way, i.e., 2785561 + 93025 = 1669^2 + 305^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719645 + ... + 719648.

2^2878586 is an apocalyptic number.

2878586 is a deficient number, since it is larger than the sum of its proper divisors (1439296).

2878586 is a wasteful number, since it uses less digits than its factorization.

2878586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439295.

The product of its digits is 215040, while the sum is 44.

The square root of 2878586 is about 1696.6396199547. The cubic root of 2878586 is about 142.2524438904.

The spelling of 2878586 in words is "two million, eight hundred seventy-eight thousand, five hundred eighty-six".