742371728 has 40 divisors (see below), whose sum is σ = 1645489920. Its totient is φ = 317836800.

The previous prime is 742371727. The next prime is 742371739. The reversal of 742371728 is 827173247.

742371728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×742371728² = 1102231565067411968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (742371727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131753 + ... + 137271.

It is an arithmetic number, because the mean of its divisors is an integer number (41137248).

Almost surely, 2^742371728 is an apocalyptic number.

It is an amenable number.

742371728 is an abundant number, since it is smaller than the sum of its proper divisors (903118192).

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

742371728 is a wasteful number, since it uses less digits than its factorization.

742371728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6735 (or 6729 counting only the distinct ones).

The product of its digits is 131712, while the sum is 41.

The square root of 742371728 is about 27246.4993714789. The cubic root of 742371728 is about 905.4694624804.

The spelling of 742371728 in words is "seven hundred forty-two million, three hundred seventy-one thousand, seven hundred twenty-eight".