7122878 has 16 divisors (see below), whose sum is σ = 12265344. Its totient is φ = 3039000.

The previous prime is 7122859. The next prime is 7122887. The reversal of 7122878 is 8782217.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2501 + ... + 4527.

It is an arithmetic number, because the mean of its divisors is an integer number (766584).

Almost surely, 2^7122878 is an apocalyptic number.

7122878 is a deficient number, since it is larger than the sum of its proper divisors (5142466).

7122878 is a wasteful number, since it uses less digits than its factorization.

7122878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287.

The product of its digits is 12544, while the sum is 35.

The square root of 7122878 is about 2668.8720463896. The cubic root of 7122878 is about 192.4059516977.

It can be divided in two parts, 7122 and 878, that added together give a cube (8000 = 20³).

The spelling of 7122878 in words is "seven million, one hundred twenty-two thousand, eight hundred seventy-eight".