84820446 has 80 divisors (see below), whose sum is σ = 211962960. Its totient is φ = 25194240.

The previous prime is 84820423. The next prime is 84820451. The reversal of 84820446 is 64402848.

It is a self number, because there is not a number n which added to its sum of digits gives 84820446.

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 39 ways as a sum of consecutive naturals, for example, 51516 + ... + 53136.

It is an arithmetic number, because the mean of its divisors is an integer number (2649537).

Almost surely, 2^84820446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84820446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105981480).

84820446 is an abundant number, since it is smaller than the sum of its proper divisors (127142514).

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

84820446 is a wasteful number, since it uses less digits than its factorization.

84820446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671 (or 1662 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 84820446 is about 9209.8016265281. The cubic root of 84820446 is about 439.3731535298.

The spelling of 84820446 in words is "eighty-four million, eight hundred twenty thousand, four hundred forty-six".