744240 has 80 divisors (see below), whose sum is σ = 2642688. Its totient is φ = 169728.

The previous prime is 744239. The next prime is 744251. The reversal of 744240 is 42447.

744240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 1459 + ... + 1901.

2⁷⁴⁴²⁴⁰ is an apocalyptic number.

744240 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 744240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1321344).

744240 is an abundant number, since it is smaller than the sum of its proper divisors (1898448).

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

744240 is a wasteful number, since it uses less digits than its factorization.

744240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 744240 is about 862.6934565650. The cubic root of 744240 is about 90.6228402180.

Adding to 744240 its reverse (42447), we get a palindrome (786687).

The spelling of 744240 in words is "seven hundred forty-four thousand, two hundred forty", and thus it is an iban number.