1340815 has 16 divisors (see below), whose sum is σ = 1903680. Its totient is φ = 887040.

The previous prime is 1340803. The next prime is 1340827. The reversal of 1340815 is 5180431.

It is an interprime number because it is at equal distance from previous prime (1340803) and next prime (1340827).

It is not a de Polignac number, because 1340815 - 2⁷ = 1340687 is a prime.

1340815 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355 + ... + 1675.

It is an arithmetic number, because the mean of its divisors is an integer number (118980).

2^1340815 is an apocalyptic number.

1340815 is a deficient number, since it is larger than the sum of its proper divisors (562865).

1340815 is a wasteful number, since it uses less digits than its factorization.

1340815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1340815 is about 1157.9356631523. The cubic root of 1340815 is about 110.2697237625.

The spelling of 1340815 in words is "one million, three hundred forty thousand, eight hundred fifteen".