1604506628 has 48 divisors (see below), whose sum is σ = 2967774768. Its totient is φ = 758016000.

The previous prime is 1604506627. The next prime is 1604506643. The reversal of 1604506628 is 8266054061.

It can be written as a sum of positive squares in 8 ways, for example, as 14730244 + 1589776384 = 3838^2 + 39872^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1604506591 and 1604506600.

It is not an unprimeable number, because it can be changed into a prime (1604506621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1704638 + ... + 1705578.

It is an arithmetic number, because the mean of its divisors is an integer number (61828641).

Almost surely, 2^1604506628 is an apocalyptic number.

It is an amenable number.

1604506628 is a deficient number, since it is larger than the sum of its proper divisors (1363268140).

1604506628 is a wasteful number, since it uses less digits than its factorization.

1604506628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304 (or 1302 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 1604506628 is about 40056.2932383914. The cubic root of 1604506628 is about 1170.7041875743.

The spelling of 1604506628 in words is "one billion, six hundred four million, five hundred six thousand, six hundred twenty-eight".