1388738 has 16 divisors (see below), whose sum is σ = 2317056. Its totient is φ = 619920.

The previous prime is 1388719. The next prime is 1388743. The reversal of 1388738 is 8378831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56 + ... + 1667.

It is an arithmetic number, because the mean of its divisors is an integer number (144816).

2^1388738 is an apocalyptic number.

1388738 is a deficient number, since it is larger than the sum of its proper divisors (928318).

1388738 is a wasteful number, since it uses less digits than its factorization.

1388738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769.

The product of its digits is 32256, while the sum is 38.

The square root of 1388738 is about 1178.4472835049. The cubic root of 1388738 is about 111.5681178009.

The spelling of 1388738 in words is "one million, three hundred eighty-eight thousand, seven hundred thirty-eight".