743642328 has 64 divisors (see below), whose sum is σ = 2184134400. Its totient is φ = 208010880.

The previous prime is 743642321. The next prime is 743642359. The reversal of 743642328 is 823246347.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743642321) 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, 104908 + ... + 111771.

It is an arithmetic number, because the mean of its divisors is an integer number (34127100).

Almost surely, 2^743642328 is an apocalyptic number.

743642328 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

743642328 is an abundant number, since it is smaller than the sum of its proper divisors (1440492072).

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

743642328 is a wasteful number, since it uses less digits than its factorization.

743642328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216712 (or 216708 counting only the distinct ones).

The product of its digits is 193536, while the sum is 39.

The square root of 743642328 is about 27269.8061599271. The cubic root of 743642328 is about 905.9857508882.

The spelling of 743642328 in words is "seven hundred forty-three million, six hundred forty-two thousand, three hundred twenty-eight".