1604273 has 16 divisors (see below), whose sum is σ = 1938816. Its totient is φ = 1309440.

The previous prime is 1604263. The next prime is 1604279. The reversal of 1604273 is 3724061.

It is not a de Polignac number, because 1604273 - 2⁸ = 1604017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1604279) 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 15 ways as a sum of consecutive naturals, for example, 4115 + ... + 4487.

It is an arithmetic number, because the mean of its divisors is an integer number (121176).

2^1604273 is an apocalyptic number.

It is an amenable number.

1604273 is a deficient number, since it is larger than the sum of its proper divisors (334543).

1604273 is a wasteful number, since it uses less digits than its factorization.

1604273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 1604273 is about 1266.5989894201. The cubic root of 1604273 is about 117.0647363761.

1604273 divided by its sum of digits (23) gives a triangular number (69751 = T₃₇₃).

The spelling of 1604273 in words is "one million, six hundred four thousand, two hundred seventy-three".