891272 has 8 divisors (see below), whose sum is σ = 1671150. Its totient is φ = 445632.

The previous prime is 891251. The next prime is 891277. The reversal of 891272 is 272198.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 784996 + 106276 = 886^2 + 326^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (891277) by changing a digit.

891272 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55697 + ... + 55712.

2⁸⁹¹²⁷² is an apocalyptic number.

It is an amenable number.

891272 is a deficient number, since it is larger than the sum of its proper divisors (779878).

891272 is a wasteful number, since it uses less digits than its factorization.

891272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111415 (or 111411 counting only the distinct ones).

The product of its digits is 2016, while the sum is 29.

The square root of 891272 is about 944.0720311502. The cubic root of 891272 is about 96.2358207032.

The spelling of 891272 in words is "eight hundred ninety-one thousand, two hundred seventy-two".