84428834 has 16 divisors (see below), whose sum is σ = 153249408. Its totient is φ = 34055232.

The previous prime is 84428833. The next prime is 84428843. The reversal of 84428834 is 43882448.

It is a junction number, because it is equal to n+sod(n) for n = 84428791 and 84428800.

It is not an unprimeable number, because it can be changed into a prime (84428833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177134 + ... + 177609.

It is an arithmetic number, because the mean of its divisors is an integer number (9578088).

Almost surely, 2^84428834 is an apocalyptic number.

84428834 is a deficient number, since it is larger than the sum of its proper divisors (68820574).

84428834 is a wasteful number, since it uses less digits than its factorization.

84428834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354769.

The product of its digits is 196608, while the sum is 41.

The square root of 84428834 is about 9188.5164199668. The cubic root of 84428834 is about 438.6959218311.

The spelling of 84428834 in words is "eighty-four million, four hundred twenty-eight thousand, eight hundred thirty-four".