1123272 has 24 divisors (see below), whose sum is σ = 3042390. Its totient is φ = 374400.

The previous prime is 1123267. The next prime is 1123279. The reversal of 1123272 is 2723211.

It can be written as a sum of positive squares in only one way, i.e., 695556 + 427716 = 834^2 + 654^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1123279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7729 + ... + 7872.

2^1123272 is an apocalyptic number.

1123272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123272 is an abundant number, since it is smaller than the sum of its proper divisors (1919118).

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

1123272 is a wasteful number, since it uses less digits than its factorization.

1123272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15613 (or 15606 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 1123272 is about 1059.8452717260. The cubic root of 1123272 is about 103.9509137194.

Adding to 1123272 its reverse (2723211), we get a palindrome (3846483).

The spelling of 1123272 in words is "one million, one hundred twenty-three thousand, two hundred seventy-two".