1388872 has 16 divisors (see below), whose sum is σ = 2626560. Its totient is φ = 688464.

The previous prime is 1388837. The next prime is 1388873. The reversal of 1388872 is 2788831.

It is not an unprimeable number, because it can be changed into a prime (1388873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333 + ... + 1699.

It is an arithmetic number, because the mean of its divisors is an integer number (164160).

2^1388872 is an apocalyptic number.

It is an amenable number.

1388872 is a deficient number, since it is larger than the sum of its proper divisors (1237688).

1388872 is a wasteful number, since it uses less digits than its factorization.

1388872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500 (or 1496 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 1388872 is about 1178.5041366071. The cubic root of 1388872 is about 111.5717061060.

The spelling of 1388872 in words is "one million, three hundred eighty-eight thousand, eight hundred seventy-two".