1122272 has 24 divisors (see below), whose sum is σ = 2340576. Its totient is φ = 527872.

The previous prime is 1122269. The next prime is 1122281. The reversal of 1122272 is 2722211.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1122272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488 + ... + 1575.

It is an arithmetic number, because the mean of its divisors is an integer number (97524).

2^1122272 is an apocalyptic number.

It is an amenable number.

1122272 is an abundant number, since it is smaller than the sum of its proper divisors (1218304).

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

1122272 is a wasteful number, since it uses less digits than its factorization.

1122272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090 (or 2082 counting only the distinct ones).

The product of its digits is 112, while the sum is 17.

The square root of 1122272 is about 1059.3733997038. The cubic root of 1122272 is about 103.9200569080.

Adding to 1122272 its reverse (2722211), we get a palindrome (3844483).

The spelling of 1122272 in words is "one million, one hundred twenty-two thousand, two hundred seventy-two".