1129472 has 22 divisors (see below), whose sum is σ = 2259888. Its totient is φ = 564224.

The previous prime is 1129459. The next prime is 1129477. The reversal of 1129472 is 2749211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473 + ... + 1575.

2^1129472 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 1129472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1129944).

1129472 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1129472 is an equidigital number, since it uses as much as digits as its factorization.

1129472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123 (or 1105 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 1129472 is about 1062.7662019466. The cubic root of 1129472 is about 104.1418183575.

The spelling of 1129472 in words is "one million, one hundred twenty-nine thousand, four hundred seventy-two".