1604401032 has 96 divisors (see below), whose sum is σ = 4464210240. Its totient is φ = 477648000.

The previous prime is 1604401003. The next prime is 1604401037. The reversal of 1604401032 is 2301044061.

1604401032 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1604401037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297157 + ... + 302507.

It is an arithmetic number, because the mean of its divisors is an integer number (46502190).

Almost surely, 2^1604401032 is an apocalyptic number.

1604401032 is a gapful number since it is divisible by the number (12) 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 1604401032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2232105120).

1604401032 is an abundant number, since it is smaller than the sum of its proper divisors (2859809208).

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

1604401032 is a wasteful number, since it uses less digits than its factorization.

1604401032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5435 (or 5400 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1604401032 is about 40054.9751216999. The cubic root of 1604401032 is about 1170.6785048319.

Adding to 1604401032 its reverse (2301044061), we get a palindrome (3905445093).

The spelling of 1604401032 in words is "one billion, six hundred four million, four hundred one thousand, thirty-two".