1388080 has 20 divisors (see below), whose sum is σ = 3227472. Its totient is φ = 555200.

The previous prime is 1388077. The next prime is 1388081. The reversal of 1388080 is 808831.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (1388081) 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, 8596 + ... + 8755.

2^1388080 is an apocalyptic number.

1388080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1388080 is an abundant number, since it is smaller than the sum of its proper divisors (1839392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1388080 is a wasteful number, since it uses less digits than its factorization.

1388080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17364 (or 17358 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 1388080 is about 1178.1680695045. The cubic root of 1388080 is about 111.5504942658.

The spelling of 1388080 in words is "one million, three hundred eighty-eight thousand, eighty".