1172288 has 28 divisors (see below), whose sum is σ = 2506980. Its totient is φ = 540672.

The previous prime is 1172279. The next prime is 1172317. The reversal of 1172288 is 8822711.

It can be written as a sum of positive squares in 2 ways, for example, as 73984 + 1098304 = 272^2 + 1048^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1172288.

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, 128 + ... + 1536.

It is an arithmetic number, because the mean of its divisors is an integer number (89535).

2^1172288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1172288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1253490).

1172288 is an abundant number, since it is smaller than the sum of its proper divisors (1334692).

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

1172288 is a wasteful number, since it uses less digits than its factorization.

1172288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434 (or 1424 counting only the distinct ones).

The product of its digits is 1792, while the sum is 29.

The square root of 1172288 is about 1082.7224944555. The cubic root of 1172288 is about 105.4414670481.

Adding to 1172288 its reverse (8822711), we get a palindrome (9994999).

The spelling of 1172288 in words is "one million, one hundred seventy-two thousand, two hundred eighty-eight".