1388008 has 8 divisors (see below), whose sum is σ = 2602530. Its totient is φ = 694000.

The previous prime is 1388003. The next prime is 1388011. The reversal of 1388008 is 8008831.

It can be written as a sum of positive squares in only one way, i.e., 1387684 + 324 = 1178^2 + 18^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1388003) by changing a digit.

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 as a sum of consecutive naturals, namely, 86743 + ... + 86758.

2^1388008 is an apocalyptic number.

It is an amenable number.

1388008 is a deficient number, since it is larger than the sum of its proper divisors (1214522).

1388008 is a wasteful number, since it uses less digits than its factorization.

1388008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173507 (or 173503 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 1388008 is about 1178.1375131961. The cubic root of 1388008 is about 111.5485655166.

The spelling of 1388008 in words is "one million, three hundred eighty-eight thousand, eight".