1604135072 has 24 divisors (see below), whose sum is σ = 3160151316. Its totient is φ = 801556992.

The previous prime is 1604135041. The next prime is 1604135077. The reversal of 1604135072 is 2705314061.

It can be written as a sum of positive squares in 2 ways, for example, as 1543232656 + 60902416 = 39284^2 + 7804^2 .

It is not an unprimeable number, because it can be changed into a prime (1604135077) 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, 37898 + ... + 68150.

Almost surely, 2^1604135072 is an apocalyptic number.

It is an amenable number.

1604135072 is a deficient number, since it is larger than the sum of its proper divisors (1556016244).

1604135072 is a wasteful number, since it uses less digits than its factorization.

1604135072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31920 (or 31912 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1604135072 is about 40051.6550469516. The cubic root of 1604135072 is about 1170.6138138445.

The spelling of 1604135072 in words is "one billion, six hundred four million, one hundred thirty-five thousand, seventy-two".