1144023428 has 36 divisors (see below), whose sum is σ = 2093809872. Its totient is φ = 546640080.

The previous prime is 1144023409. The next prime is 1144023467. The reversal of 1144023428 is 8243204411.

It is a self number, because there is not a number n which added to its sum of digits gives 1144023428.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 378443 + ... + 381453.

Almost surely, 2^1144023428 is an apocalyptic number.

It is an amenable number.

1144023428 is a deficient number, since it is larger than the sum of its proper divisors (949786444).

1144023428 is a wasteful number, since it uses less digits than its factorization.

1144023428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152 (or 3103 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 1144023428 is about 33823.4153804727. The cubic root of 1144023428 is about 1045.8714457282.

Adding to 1144023428 its reverse (8243204411), we get a palindrome (9387227839).

The spelling of 1144023428 in words is "one billion, one hundred forty-four million, twenty-three thousand, four hundred twenty-eight".