9742728 has 16 divisors (see below), whose sum is σ = 24356880. Its totient is φ = 3247568.

The previous prime is 9742709. The next prime is 9742739. The reversal of 9742728 is 8272479.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202950 + ... + 202997.

It is an arithmetic number, because the mean of its divisors is an integer number (1522305).

Almost surely, 2^9742728 is an apocalyptic number.

It is an amenable number.

9742728 is an abundant number, since it is smaller than the sum of its proper divisors (14614152).

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

9742728 is a wasteful number, since it uses less digits than its factorization.

9742728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405956 (or 405952 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 9742728 is about 3121.3343300582. The cubic root of 9742728 is about 213.5798084408.

The spelling of 9742728 in words is "nine million, seven hundred forty-two thousand, seven hundred twenty-eight".