84878222 has 48 divisors (see below), whose sum is σ = 154712592. Its totient is φ = 34594560.

The previous prime is 84878197. The next prime is 84878237. The reversal of 84878222 is 22287848.

It is a self number, because there is not a number n which added to its sum of digits gives 84878222.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 137258 + ... + 137874.

It is an arithmetic number, because the mean of its divisors is an integer number (3223179).

Almost surely, 2^84878222 is an apocalyptic number.

84878222 is a deficient number, since it is larger than the sum of its proper divisors (69834370).

84878222 is a wasteful number, since it uses less digits than its factorization.

84878222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693 (or 680 counting only the distinct ones).

The product of its digits is 114688, while the sum is 41.

The square root of 84878222 is about 9212.9377507937. The cubic root of 84878222 is about 439.4728915173.

The spelling of 84878222 in words is "eighty-four million, eight hundred seventy-eight thousand, two hundred twenty-two".