1388212 has 24 divisors (see below), whose sum is σ = 2843456. Its totient is φ = 580608.

The previous prime is 1388183. The next prime is 1388227. The reversal of 1388212 is 2128831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628 + ... + 1780.

2^1388212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1388212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1421728).

1388212 is an abundant number, since it is smaller than the sum of its proper divisors (1455244).

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

1388212 is a wasteful number, since it uses less digits than its factorization.

1388212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207 (or 1205 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 1388212 is about 1178.2240873450. The cubic root of 1388212 is about 111.5540301327.

It can be divided in two parts, 1388 and 212, that added together give a square (1600 = 40²).

The spelling of 1388212 in words is "one million, three hundred eighty-eight thousand, two hundred twelve".