1340816 has 20 divisors (see below), whose sum is σ = 2654592. Its totient is φ = 655776.

The previous prime is 1340803. The next prime is 1340827. The reversal of 1340816 is 6180431.

It is a junction number, because it is equal to n+sod(n) for n = 1340791 and 1340800.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140 + ... + 1643.

2^1340816 is an apocalyptic number.

1340816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1340816 is a deficient number, since it is larger than the sum of its proper divisors (1313776).

1340816 is a wasteful number, since it uses less digits than its factorization.

1340816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838 (or 1832 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1340816 is about 1157.9360949552. The cubic root of 1340816 is about 110.2697511761.

The spelling of 1340816 in words is "one million, three hundred forty thousand, eight hundred sixteen".