805998132 has 36 divisors (see below), whose sum is σ = 2063181120. Its totient is φ = 265264272.

The previous prime is 805998091. The next prime is 805998133. The reversal of 805998132 is 231899508.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805998133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138858 + ... + 144545.

Almost surely, 2^805998132 is an apocalyptic number.

It is an amenable number.

805998132 is an abundant number, since it is smaller than the sum of its proper divisors (1257182988).

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

805998132 is a wasteful number, since it uses less digits than its factorization.

805998132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283492 (or 283487 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 805998132 is about 28390.1062343909. The cubic root of 805998132 is about 930.6320642571.

The spelling of 805998132 in words is "eight hundred five million, nine hundred ninety-eight thousand, one hundred thirty-two".