1138212 has 36 divisors (see below), whose sum is σ = 2986256. Its totient is φ = 379080.

The previous prime is 1138183. The next prime is 1138213. The reversal of 1138212 is 2128311.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1138213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 387 + ... + 1557.

2^1138212 is an apocalyptic number.

1138212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1138212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1493128).

1138212 is an abundant number, since it is smaller than the sum of its proper divisors (1848044).

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

1138212 is a wasteful number, since it uses less digits than its factorization.

1138212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190 (or 1176 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1138212 is about 1066.8701889171. The cubic root of 1138212 is about 104.4097493868.

Subtracting 1138212 from its reverse (2128311), we obtain a palindrome (990099).

The spelling of 1138212 in words is "one million, one hundred thirty-eight thousand, two hundred twelve".