743404128 has 96 divisors (see below), whose sum is σ = 2029587840. Its totient is φ = 238064640.

The previous prime is 743404121. The next prime is 743404147. The reversal of 743404128 is 821404347.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743404121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262303 + ... + 265121.

It is an arithmetic number, because the mean of its divisors is an integer number (21141540).

Almost surely, 2^743404128 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 743404128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1014793920).

743404128 is an abundant number, since it is smaller than the sum of its proper divisors (1286183712).

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

743404128 is a wasteful number, since it uses less digits than its factorization.

743404128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940 (or 2932 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 743404128 is about 27265.4383423410. The cubic root of 743404128 is about 905.8890068650.

The spelling of 743404128 in words is "seven hundred forty-three million, four hundred four thousand, one hundred twenty-eight".