4782878 has 4 divisors (see below), whose sum is σ = 7174320. Its totient is φ = 2391438.

The previous prime is 4782871. The next prime is 4782881. The reversal of 4782878 is 8782874.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8782874 = 2 ⋅4391437.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4782871) 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 as a sum of consecutive naturals, namely, 1195718 + ... + 1195721.

It is an arithmetic number, because the mean of its divisors is an integer number (1793580).

Almost surely, 2^4782878 is an apocalyptic number.

4782878 is a deficient number, since it is larger than the sum of its proper divisors (2391442).

4782878 is a wasteful number, since it uses less digits than its factorization.

4782878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391441.

The product of its digits is 200704, while the sum is 44.

The square root of 4782878 is about 2186.9791951457. The cubic root of 4782878 is about 168.4857211262.

The spelling of 4782878 in words is "four million, seven hundred eighty-two thousand, eight hundred seventy-eight".