805390532 has 12 divisors (see below), whose sum is σ = 1418411820. Its totient is φ = 400130016.

The previous prime is 805390529. The next prime is 805390561. The reversal of 805390532 is 235093508.

It can be written as a sum of positive squares in 2 ways, for example, as 145106116 + 660284416 = 12046^2 + 25696^2 .

It is a junction number, because it is equal to n+sod(n) for n = 805390492 and 805390501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640607 + ... + 641862.

It is an arithmetic number, because the mean of its divisors is an integer number (118200985).

Almost surely, 2^805390532 is an apocalyptic number.

It is an amenable number.

805390532 is a deficient number, since it is larger than the sum of its proper divisors (613021288).

805390532 is a wasteful number, since it uses less digits than its factorization.

805390532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282630 (or 1282628 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 805390532 is about 28379.4033059189. The cubic root of 805390532 is about 930.3981537935.

The spelling of 805390532 in words is "eight hundred five million, three hundred ninety thousand, five hundred thirty-two".