9073281 has 12 divisors (see below), whose sum is σ = 14073072. Its totient is φ = 5184648.

The previous prime is 9073249. The next prime is 9073289. The reversal of 9073281 is 1823709.

It is a happy number.

It is not a de Polignac number, because 9073281 - 2⁵ = 9073249 is a prime.

It is a super-2 number, since 2×9073281² = 164648856209922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9073289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30715 + ... + 31008.

It is an arithmetic number, because the mean of its divisors is an integer number (1172756).

Almost surely, 2^9073281 is an apocalyptic number.

It is an amenable number.

9073281 is a deficient number, since it is larger than the sum of its proper divisors (4999791).

9073281 is a wasteful number, since it uses less digits than its factorization.

9073281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61740 (or 61733 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 9073281 is about 3012.1887391065. The cubic root of 9073281 is about 208.5714147879.

The spelling of 9073281 in words is "nine million, seventy-three thousand, two hundred eighty-one".