743381328 has 80 divisors (see below), whose sum is σ = 1968374016. Its totient is φ = 241643520.

The previous prime is 743381279. The next prime is 743381351. The reversal of 743381328 is 823183347.

It is a congruent number.

It is an unprimeable number.

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, 976468 + ... + 977228.

Almost surely, 2^743381328 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 743381328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984187008).

743381328 is an abundant number, since it is smaller than the sum of its proper divisors (1224992688).

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

743381328 is a wasteful number, since it uses less digits than its factorization.

743381328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252 (or 1246 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 743381328 is about 27265.0202273903. The cubic root of 743381328 is about 905.8797456481.

The spelling of 743381328 in words is "seven hundred forty-three million, three hundred eighty-one thousand, three hundred twenty-eight".