743444730 has 320 divisors, whose sum is σ = 2464450560. Its totient is φ = 157044096.

The previous prime is 743444729. The next prime is 743444761. The reversal of 743444730 is 37444347.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 7217859 + ... + 7217961.

It is an arithmetic number, because the mean of its divisors is an integer number (7701408).

Almost surely, 2^743444730 is an apocalyptic number.

743444730 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 743444730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1232225280).

743444730 is an abundant number, since it is smaller than the sum of its proper divisors (1721005830).

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

743444730 is a wasteful number, since it uses less digits than its factorization.

743444730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 36.

The square root of 743444730 is about 27266.1829011690. The cubic root of 743444730 is about 905.9054986736.

The spelling of 743444730 in words is "seven hundred forty-three million, four hundred forty-four thousand, seven hundred thirty".