1604480 has 64 divisors (see below), whose sum is σ = 4039200. Its totient is φ = 608256.

The previous prime is 1604479. The next prime is 1604497. The reversal of 1604480 is 844061.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14666 + ... + 14774.

2^1604480 is an apocalyptic number.

1604480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1604480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2019600).

1604480 is an abundant number, since it is smaller than the sum of its proper divisors (2434720).

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

1604480 is a wasteful number, since it uses less digits than its factorization.

1604480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1604480 is about 1266.6807016766. The cubic root of 1604480 is about 117.0697711298.

The spelling of 1604480 in words is "one million, six hundred four thousand, four hundred eighty".