9145724 has 12 divisors (see below), whose sum is σ = 18291504. Its totient is φ = 3919584.

The previous prime is 9145699. The next prime is 9145739. The reversal of 9145724 is 4275419.

It is a happy number.

9145724 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 163289 + ... + 163344.

It is an arithmetic number, because the mean of its divisors is an integer number (1524292).

Almost surely, 2^9145724 is an apocalyptic number.

It is an amenable number.

9145724 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9145724 is a wasteful number, since it uses less digits than its factorization.

9145724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326644 (or 326642 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 9145724 is about 3024.1898088579. The cubic root of 9145724 is about 209.1250367849.

The spelling of 9145724 in words is "nine million, one hundred forty-five thousand, seven hundred twenty-four".