1388704 has 12 divisors (see below), whose sum is σ = 2734074. Its totient is φ = 694336.

The previous prime is 1388701. The next prime is 1388719. The reversal of 1388704 is 4078831.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 898704 + 490000 = 948^2 + 700^2 .

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21667 + ... + 21730.

2^1388704 is an apocalyptic number.

It is an amenable number.

1388704 is a deficient number, since it is larger than the sum of its proper divisors (1345370).

1388704 is an equidigital number, since it uses as much as digits as its factorization.

1388704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43407 (or 43399 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 1388704 is about 1178.4328576546. The cubic root of 1388704 is about 111.5672072988.

The spelling of 1388704 in words is "one million, three hundred eighty-eight thousand, seven hundred four".