1130428 has 12 divisors (see below), whose sum is σ = 2130520. Its totient is φ = 521712.

The previous prime is 1130417. The next prime is 1130429. The reversal of 1130428 is 8240311.

It is a super-3 number, since 3×1130428³ = 4333611482016488256, which contains 333 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10818 + ... + 10921.

2^1130428 is an apocalyptic number.

It is an amenable number.

1130428 is a deficient number, since it is larger than the sum of its proper divisors (1000092).

1130428 is a wasteful number, since it uses less digits than its factorization.

1130428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21756 (or 21754 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1130428 is about 1063.2158764804. The cubic root of 1130428 is about 104.1711924078.

Adding to 1130428 its reverse (8240311), we get a palindrome (9370739).

It can be divided in two parts, 113042 and 8, that added together give a triangular number (113050 = T₄₇₅).

The spelling of 1130428 in words is "one million, one hundred thirty thousand, four hundred twenty-eight".