744320 has 32 divisors (see below), whose sum is σ = 1780920. Its totient is φ = 297472.

The previous prime is 744313. The next prime is 744353. The reversal of 744320 is 23447.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 744292 and 744301.

It is a congruent number.

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, 59 + ... + 1221.

2⁷⁴⁴³²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 744320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (890460).

744320 is an abundant number, since it is smaller than the sum of its proper divisors (1036600).

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

744320 is a wasteful number, since it uses less digits than its factorization.

744320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182 (or 1170 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 744320 is about 862.7398217307. The cubic root of 744320 is about 90.6260871847.

Adding to 744320 its reverse (23447), we get a palindrome (767767).

The spelling of 744320 in words is "seven hundred forty-four thousand, three hundred twenty", and thus it is an iban number.