744380 has 48 divisors (see below), whose sum is σ = 1928640. Its totient is φ = 235008.

The previous prime is 744377. The next prime is 744389. The reversal of 744380 is 83447.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1616 + ... + 2024.

It is an arithmetic number, because the mean of its divisors is an integer number (40180).

2⁷⁴⁴³⁸⁰ is an apocalyptic number.

744380 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 744380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (964320).

744380 is an abundant number, since it is smaller than the sum of its proper divisors (1184260).

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

744380 is a wasteful number, since it uses less digits than its factorization.

744380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 744380 is about 862.7745939699. The cubic root of 744380 is about 90.6285222571.

The spelling of 744380 in words is "seven hundred forty-four thousand, three hundred eighty".