804511988 has 48 divisors (see below), whose sum is σ = 1658092800. Its totient is φ = 341383392.

The previous prime is 804511973. The next prime is 804511991. The reversal of 804511988 is 889115408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138470 + ... + 144162.

It is an arithmetic number, because the mean of its divisors is an integer number (34543600).

Almost surely, 2^804511988 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 804511988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829046400).

804511988 is an abundant number, since it is smaller than the sum of its proper divisors (853580812).

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

804511988 is a wasteful number, since it uses less digits than its factorization.

804511988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5821 (or 5805 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 44.

The square root of 804511988 is about 28363.9205329588. The cubic root of 804511988 is about 930.0597286956.

The spelling of 804511988 in words is "eight hundred four million, five hundred eleven thousand, nine hundred eighty-eight".