1604513232 has 240 divisors, whose sum is σ = 5397124800. Its totient is φ = 455051520.

The previous prime is 1604513231. The next prime is 1604513243. The reversal of 1604513232 is 2323154061.

1604513232 is a `hidden beast` number, since 1 + 604 + 51 + 3 + 2 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1604513196 and 1604513205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604513231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4847307 + ... + 4847637.

It is an arithmetic number, because the mean of its divisors is an integer number (22488020).

Almost surely, 2^1604513232 is an apocalyptic number.

1604513232 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 1604513232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2698562400).

1604513232 is an abundant number, since it is smaller than the sum of its proper divisors (3792611568).

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

1604513232 is a wasteful number, since it uses less digits than its factorization.

1604513232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1604513232 is about 40056.3756722947. The cubic root of 1604513232 is about 1170.7057937420.

Adding to 1604513232 its reverse (2323154061), we get a palindrome (3927667293).

The spelling of 1604513232 in words is "one billion, six hundred four million, five hundred thirteen thousand, two hundred thirty-two".