320421244 has 48 divisors (see below), whose sum is σ = 693463680. Its totient is φ = 127362240.

The previous prime is 320421229. The next prime is 320421259. The reversal of 320421244 is 442124023.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (320421229) and next prime (320421259).

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 3874 + ... + 25609.

It is an arithmetic number, because the mean of its divisors is an integer number (14447160).

Almost surely, 2^320421244 is an apocalyptic number.

It is an amenable number.

320421244 is an abundant number, since it is smaller than the sum of its proper divisors (373042436).

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

320421244 is a wasteful number, since it uses less digits than its factorization.

320421244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29530 (or 29528 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 320421244 is about 17900.3140754569. The cubic root of 320421244 is about 684.2903791984.

Adding to 320421244 its reverse (442124023), we get a palindrome (762545267).

The spelling of 320421244 in words is "three hundred twenty million, four hundred twenty-one thousand, two hundred forty-four".