1540804 has 12 divisors (see below), whose sum is σ = 2715328. Its totient is φ = 765000.

The previous prime is 1540789. The next prime is 1540807. The reversal of 1540804 is 4080451.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1540807) 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, 672 + ... + 1879.

2^1540804 is an apocalyptic number.

It is an amenable number.

1540804 is a deficient number, since it is larger than the sum of its proper divisors (1174524).

1540804 is a wasteful number, since it uses less digits than its factorization.

1540804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706 (or 2704 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1540804 is about 1241.2912631611. The cubic root of 1540804 is about 115.5001280584.

The spelling of 1540804 in words is "one million, five hundred forty thousand, eight hundred four".