84181804 has 24 divisors (see below), whose sum is σ = 171802400. Its totient is φ = 36077328.

The previous prime is 84181787. The next prime is 84181813. The reversal of 84181804 is 40818148.

It is a happy number.

It is a super-2 number, since 2×84181804² = 14173152249388832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84181804.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29307 + ... + 32050.

Almost surely, 2^84181804 is an apocalyptic number.

It is an amenable number.

84181804 is an abundant number, since it is smaller than the sum of its proper divisors (87620596).

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

84181804 is a wasteful number, since it uses less digits than its factorization.

84181804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61382 (or 61366 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 34.

The square root of 84181804 is about 9175.0642504562. The cubic root of 84181804 is about 438.2676442916.

The spelling of 84181804 in words is "eighty-four million, one hundred eighty-one thousand, eight hundred four".