1388662 has 32 divisors (see below), whose sum is σ = 2488320. Its totient is φ = 574080.

The previous prime is 1388659. The next prime is 1388669. The reversal of 1388662 is 2668831.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388669) 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, 17539 + ... + 17617.

It is an arithmetic number, because the mean of its divisors is an integer number (77760).

2^1388662 is an apocalyptic number.

1388662 is a deficient number, since it is larger than the sum of its proper divisors (1099658).

1388662 is a wasteful number, since it uses less digits than its factorization.

1388662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156.

The product of its digits is 13824, while the sum is 34.

The square root of 1388662 is about 1178.4150372428. The cubic root of 1388662 is about 111.5660825402.

The spelling of 1388662 in words is "one million, three hundred eighty-eight thousand, six hundred sixty-two".