1604456 has 24 divisors (see below), whose sum is σ = 3500370. Its totient is φ = 687456.

The previous prime is 1604441. The next prime is 1604461. The reversal of 1604456 is 6544061.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1416100 + 188356 = 1190^2 + 434^2 .

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 5 ways as a sum of consecutive naturals, for example, 1655 + ... + 2438.

2^1604456 is an apocalyptic number.

It is an amenable number.

1604456 is an abundant number, since it is smaller than the sum of its proper divisors (1895914).

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

1604456 is a wasteful number, since it uses less digits than its factorization.

1604456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4113 (or 4102 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1604456 is about 1266.6712280620. The cubic root of 1604456 is about 117.0691874125.

The spelling of 1604456 in words is "one million, six hundred four thousand, four hundred fifty-six".