1540814 has 12 divisors (see below), whose sum is σ = 2540832. Its totient is φ = 700260.

The previous prime is 1540813. The next prime is 1540823. The reversal of 1540814 is 4180451.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1540814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2942 + ... + 3425.

It is an arithmetic number, because the mean of its divisors is an integer number (211736).

2^1540814 is an apocalyptic number.

1540814 is a deficient number, since it is larger than the sum of its proper divisors (1000018).

1540814 is a wasteful number, since it uses less digits than its factorization.

1540814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6391 (or 6380 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 1540814 is about 1241.2952912180. The cubic root of 1540814 is about 115.5003779277.

The spelling of 1540814 in words is "one million, five hundred forty thousand, eight hundred fourteen".