878422 has 8 divisors (see below), whose sum is σ = 1342656. Its totient is φ = 430872.

The previous prime is 878419. The next prime is 878443. The reversal of 878422 is 224878.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4038 + ... + 4249.

It is an arithmetic number, because the mean of its divisors is an integer number (167832).

2⁸⁷⁸⁴²² is an apocalyptic number.

878422 is a deficient number, since it is larger than the sum of its proper divisors (464234).

878422 is a wasteful number, since it uses less digits than its factorization.

878422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8342.

The product of its digits is 7168, while the sum is 31.

The square root of 878422 is about 937.2416977493. The cubic root of 878422 is about 95.7710836233.

The spelling of 878422 in words is "eight hundred seventy-eight thousand, four hundred twenty-two".