1138432 has 18 divisors (see below), whose sum is σ = 2272928. Its totient is φ = 569088.

The previous prime is 1138429. The next prime is 1138433. The reversal of 1138432 is 2348311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1968 + ... + 2479.

2^1138432 is an apocalyptic number.

It is an amenable number.

1138432 is a deficient number, since it is larger than the sum of its proper divisors (1134496).

1138432 is an frugal number, since it uses more digits than its factorization.

1138432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4463 (or 4449 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 1138432 is about 1066.9732892627. The cubic root of 1138432 is about 104.4164759208.

The spelling of 1138432 in words is "one million, one hundred thirty-eight thousand, four hundred thirty-two".