84156804 has 72 divisors (see below), whose sum is σ = 218050560. Its totient is φ = 27361152.

The previous prime is 84156799. The next prime is 84156823. The reversal of 84156804 is 40865148.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 361072 + ... + 361304.

It is an arithmetic number, because the mean of its divisors is an integer number (3028480).

Almost surely, 2^84156804 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 84156804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109025280).

84156804 is an abundant number, since it is smaller than the sum of its proper divisors (133893756).

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

84156804 is a wasteful number, since it uses less digits than its factorization.

84156804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 84156804 is about 9173.7017610123. The cubic root of 84156804 is about 438.2242549629.

The spelling of 84156804 in words is "eighty-four million, one hundred fifty-six thousand, eight hundred four".