742801728 has 56 divisors (see below), whose sum is σ = 1975307200. Its totient is φ = 246343680.

The previous prime is 742801711. The next prime is 742801769. The reversal of 742801728 is 827108247.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28488 + ... + 47928.

Almost surely, 2^742801728 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 742801728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (987653600).

742801728 is an abundant number, since it is smaller than the sum of its proper divisors (1232505472).

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

742801728 is a wasteful number, since it uses less digits than its factorization.

742801728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19655 (or 19645 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 742801728 is about 27254.3891511074. The cubic root of 742801728 is about 905.6442521463.

The spelling of 742801728 in words is "seven hundred forty-two million, eight hundred one thousand, seven hundred twenty-eight".