320465436 has 48 divisors (see below), whose sum is σ = 813155616. Its totient is φ = 97818624.

The previous prime is 320465429. The next prime is 320465441. The reversal of 320465436 is 634564023.

It is a junction number, because it is equal to n+sod(n) for n = 320465397 and 320465406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13681 + ... + 28776.

It is an arithmetic number, because the mean of its divisors is an integer number (16940742).

Almost surely, 2^320465436 is an apocalyptic number.

It is an amenable number.

320465436 is an abundant number, since it is smaller than the sum of its proper divisors (492690180).

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

320465436 is a wasteful number, since it uses less digits than its factorization.

320465436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42518 (or 42516 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 320465436 is about 17901.5484246475. The cubic root of 320465436 is about 684.3218365075.

The spelling of 320465436 in words is "three hundred twenty million, four hundred sixty-five thousand, four hundred thirty-six".