1604478 has 8 divisors (see below), whose sum is σ = 3208968. Its totient is φ = 534824.

The previous prime is 1604461. The next prime is 1604479. The reversal of 1604478 is 8744061.

It is a sphenic number, since it is the product of 3 distinct primes.

1604478 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604479) 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, 133701 + ... + 133712.

It is an arithmetic number, because the mean of its divisors is an integer number (401121).

2^1604478 is an apocalyptic number.

1604478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1604478 is a wasteful number, since it uses less digits than its factorization.

1604478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267418.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 1604478 is about 1266.6799122114. The cubic root of 1604478 is about 117.0697224869.

The spelling of 1604478 in words is "one million, six hundred four thousand, four hundred seventy-eight".