1380816 has 60 divisors (see below), whose sum is σ = 3971968. Its totient is φ = 447552.

The previous prime is 1380811. The next prime is 1380817. The reversal of 1380816 is 6180831.

It is a self number, because there is not a number n which added to its sum of digits gives 1380816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6081 + ... + 6303.

2^1380816 is an apocalyptic number.

1380816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1380816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1985984).

1380816 is an abundant number, since it is smaller than the sum of its proper divisors (2591152).

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

1380816 is a wasteful number, since it uses less digits than its factorization.

1380816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1380816 is about 1175.0812737849. The cubic root of 1380816 is about 111.3555678478.

It can be divided in two parts, 13808 and 16, that added together give a cube (13824 = 24³).

The spelling of 1380816 in words is "one million, three hundred eighty thousand, eight hundred sixteen".