1388330 has 16 divisors (see below), whose sum is σ = 2630880. Its totient is φ = 526032.

The previous prime is 1388327. The next prime is 1388353. The reversal of 1388330 is 338831.

It is a self number, because there is not a number n which added to its sum of digits gives 1388330.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3464 + ... + 3843.

It is an arithmetic number, because the mean of its divisors is an integer number (164430).

2^1388330 is an apocalyptic number.

1388330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1388330 is a deficient number, since it is larger than the sum of its proper divisors (1242550).

1388330 is a wasteful number, since it uses less digits than its factorization.

1388330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7333.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1388330 is about 1178.2741616449. The cubic root of 1388330 is about 111.5571907937.

The spelling of 1388330 in words is "one million, three hundred eighty-eight thousand, three hundred thirty".