1139228 has 6 divisors (see below), whose sum is σ = 1993656. Its totient is φ = 569612.

The previous prime is 1139227. The next prime is 1139239. The reversal of 1139228 is 8229311.

It is a junction number, because it is equal to n+sod(n) for n = 1139197 and 1139206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142400 + ... + 142407.

It is an arithmetic number, because the mean of its divisors is an integer number (332276).

2^1139228 is an apocalyptic number.

It is an amenable number.

1139228 is a deficient number, since it is larger than the sum of its proper divisors (854428).

1139228 is a wasteful number, since it uses less digits than its factorization.

1139228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284811 (or 284809 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

The square root of 1139228 is about 1067.3462418541. The cubic root of 1139228 is about 104.4408065061.

The spelling of 1139228 in words is "one million, one hundred thirty-nine thousand, two hundred twenty-eight".