1604456328 has 48 divisors (see below), whose sum is σ = 4260988080. Its totient is φ = 503356672.

The previous prime is 1604456299. The next prime is 1604456351. The reversal of 1604456328 is 8236544061.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108726 + ... + 122597.

It is an arithmetic number, because the mean of its divisors is an integer number (88770585).

Almost surely, 2^1604456328 is an apocalyptic number.

It is an amenable number.

1604456328 is an abundant number, since it is smaller than the sum of its proper divisors (2656531752).

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

1604456328 is a wasteful number, since it uses less digits than its factorization.

1604456328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231366 (or 231345 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 1604456328 is about 40055.6653670863. The cubic root of 1604456328 is about 1170.6919538997.

The spelling of 1604456328 in words is "one billion, six hundred four million, four hundred fifty-six thousand, three hundred twenty-eight".