9272731 has 4 divisors (see below), whose sum is σ = 9986032. Its totient is φ = 8559432.

The previous prime is 9272713. The next prime is 9272773. The reversal of 9272731 is 1372729.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1372729 = 47 ⋅29207.

It is a cyclic number.

It is not a de Polignac number, because 9272731 - 2⁷ = 9272603 is a prime.

It is a super-2 number, since 2×9272731² = 171967080396722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9272693 and 9272702.

It is not an unprimeable number, because it can be changed into a prime (9272231) 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, 356631 + ... + 356656.

It is an arithmetic number, because the mean of its divisors is an integer number (2496508).

Almost surely, 2^9272731 is an apocalyptic number.

9272731 is a deficient number, since it is larger than the sum of its proper divisors (713301).

9272731 is a wasteful number, since it uses less digits than its factorization.

9272731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713300.

The product of its digits is 5292, while the sum is 31.

The square root of 9272731 is about 3045.1159255437. The cubic root of 9272731 is about 210.0886322768.

The spelling of 9272731 in words is "nine million, two hundred seventy-two thousand, seven hundred thirty-one".