84420804 has 96 divisors (see below), whose sum is σ = 221671296. Its totient is φ = 24837120.

The previous prime is 84420803. The next prime is 84420811. The reversal of 84420804 is 40802448.

It is not an unprimeable number, because it can be changed into a prime (84420803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 428434 + ... + 428630.

It is an arithmetic number, because the mean of its divisors is an integer number (2309076).

Almost surely, 2^84420804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84420804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110835648).

84420804 is an abundant number, since it is smaller than the sum of its proper divisors (137250492).

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

84420804 is a wasteful number, since it uses less digits than its factorization.

84420804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 84420804 is about 9188.0794511149. The cubic root of 84420804 is about 438.6820133128.

The spelling of 84420804 in words is "eighty-four million, four hundred twenty thousand, eight hundred four".