1388416 has 16 divisors (see below), whose sum is σ = 2766240. Its totient is φ = 694144.

The previous prime is 1388411. The next prime is 1388419. The reversal of 1388416 is 6148831.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5296 + ... + 5551.

It is an arithmetic number, because the mean of its divisors is an integer number (172890).

2^1388416 is an apocalyptic number.

1388416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1388416 is a deficient number, since it is larger than the sum of its proper divisors (1377824).

1388416 is an equidigital number, since it uses as much as digits as its factorization.

1388416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10861 (or 10849 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 1388416 is about 1178.3106551330. The cubic root of 1388416 is about 111.5594942135.

The spelling of 1388416 in words is "one million, three hundred eighty-eight thousand, four hundred sixteen".