9072287 has 4 divisors (see below), whose sum is σ = 10368336. Its totient is φ = 7776240.

The previous prime is 9072247. The next prime is 9072299. The reversal of 9072287 is 7822709.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9072287 - 2⁸ = 9072031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9072227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648014 + ... + 648027.

It is an arithmetic number, because the mean of its divisors is an integer number (2592084).

Almost surely, 2^9072287 is an apocalyptic number.

9072287 is a deficient number, since it is larger than the sum of its proper divisors (1296049).

9072287 is a wasteful number, since it uses less digits than its factorization.

9072287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296048.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 9072287 is about 3012.0237382863. The cubic root of 9072287 is about 208.5637980078.

It can be divided in two parts, 90722 and 87, that added together give a palindrome (90809).

The spelling of 9072287 in words is "nine million, seventy-two thousand, two hundred eighty-seven".