1388136 has 16 divisors (see below), whose sum is σ = 3470400. Its totient is φ = 462704.

The previous prime is 1388117. The next prime is 1388141. The reversal of 1388136 is 6318831.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28896 + ... + 28943.

It is an arithmetic number, because the mean of its divisors is an integer number (216900).

2^1388136 is an apocalyptic number.

It is an amenable number.

1388136 is an abundant number, since it is smaller than the sum of its proper divisors (2082264).

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

1388136 is a wasteful number, since it uses less digits than its factorization.

1388136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57848 (or 57844 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 1388136 is about 1178.1918349743. The cubic root of 1388136 is about 111.5519943579.

The spelling of 1388136 in words is "one million, three hundred eighty-eight thousand, one hundred thirty-six".