320247 has 16 divisors (see below), whose sum is σ = 492000. Its totient is φ = 205632.

The previous prime is 320239. The next prime is 320267. The reversal of 320247 is 742023.

It is a happy number.

It is not a de Polignac number, because 320247 - 2³ = 320239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579 + ... + 987.

It is an arithmetic number, because the mean of its divisors is an integer number (30750).

2³²⁰²⁴⁷ is an apocalyptic number.

320247 is a deficient number, since it is larger than the sum of its proper divisors (171753).

320247 is a wasteful number, since it uses less digits than its factorization.

320247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 320247 is about 565.9037020554. The cubic root of 320247 is about 68.4166318435.

It can be divided in two parts, 3202 and 47, that added together give a square (3249 = 57²).

The spelling of 320247 in words is "three hundred twenty thousand, two hundred forty-seven", and thus it is an iban number.