1604934 has 20 divisors (see below), whose sum is σ = 3596604. Its totient is φ = 534924.

The previous prime is 1604929. The next prime is 1604951. The reversal of 1604934 is 4394061.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1604898 and 1604907.

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 4792 + ... + 5115.

2^1604934 is an apocalyptic number.

1604934 is an abundant number, since it is smaller than the sum of its proper divisors (1991670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1604934 is an equidigital number, since it uses as much as digits as its factorization.

1604934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9921 (or 9912 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1604934 is about 1266.8598975419. The cubic root of 1604934 is about 117.0808120203.

Adding to 1604934 its reverse (4394061), we get a palindrome (5998995).

The spelling of 1604934 in words is "one million, six hundred four thousand, nine hundred thirty-four".