1388706 has 32 divisors (see below), whose sum is σ = 3094848. Its totient is φ = 411840.

The previous prime is 1388701. The next prime is 1388719. The reversal of 1388706 is 6078831.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1388701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3300 + ... + 3696.

It is an arithmetic number, because the mean of its divisors is an integer number (96714).

2^1388706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1388706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1547424).

1388706 is an abundant number, since it is smaller than the sum of its proper divisors (1706142).

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

1388706 is a wasteful number, since it uses less digits than its factorization.

1388706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1388706 is about 1178.4337062389. The cubic root of 1388706 is about 111.5672608581.

The spelling of 1388706 in words is "one million, three hundred eighty-eight thousand, seven hundred six".