9121272 has 32 divisors (see below), whose sum is σ = 22885200. Its totient is φ = 3029504.

The previous prime is 9121249. The next prime is 9121279. The reversal of 9121272 is 2721219.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9121279) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8848 + ... + 9824.

Almost surely, 2^9121272 is an apocalyptic number.

It is an amenable number.

9121272 is an abundant number, since it is smaller than the sum of its proper divisors (13763928).

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

9121272 is a wasteful number, since it uses less digits than its factorization.

9121272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375 (or 1371 counting only the distinct ones).

The product of its digits is 504, while the sum is 24.

The square root of 9121272 is about 3020.1443674103. The cubic root of 9121272 is about 208.9384982687.

The spelling of 9121272 in words is "nine million, one hundred twenty-one thousand, two hundred seventy-two".