84628278 has 48 divisors (see below), whose sum is σ = 221888160. Its totient is φ = 22756608.

The previous prime is 84628273. The next prime is 84628279. The reversal of 84628278 is 87282648.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84628273) 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 in 23 ways as a sum of consecutive naturals, for example, 17613 + ... + 21896.

It is an arithmetic number, because the mean of its divisors is an integer number (4622670).

Almost surely, 2^84628278 is an apocalyptic number.

84628278 is an abundant number, since it is smaller than the sum of its proper divisors (137259882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84628278 is a wasteful number, since it uses less digits than its factorization.

84628278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39541 (or 39538 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 84628278 is about 9199.3629127239. The cubic root of 84628278 is about 439.0410901014.

The spelling of 84628278 in words is "eighty-four million, six hundred twenty-eight thousand, two hundred seventy-eight".