320464 has 10 divisors (see below), whose sum is σ = 620930. Its totient is φ = 160224.

The previous prime is 320449. The next prime is 320471. The reversal of 320464 is 464023.

It can be written as a sum of positive squares in only one way, i.e., 242064 + 78400 = 492^2 + 280^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9999 + ... + 10030.

It is an arithmetic number, because the mean of its divisors is an integer number (62093).

2³²⁰⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

320464 is a deficient number, since it is larger than the sum of its proper divisors (300466).

320464 is a wasteful number, since it uses less digits than its factorization.

320464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20037 (or 20031 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 320464 is about 566.0953983208. The cubic root of 320464 is about 68.4320814361.

Adding to 320464 its reverse (464023), we get a palindrome (784487).

It can be divided in two parts, 320 and 464, that added together give a square (784 = 28²).

The spelling of 320464 in words is "three hundred twenty thousand, four hundred sixty-four".