1328842404 has 36 divisors (see below), whose sum is σ = 3467376640. Its totient is φ = 428658480.

The previous prime is 1328842393. The next prime is 1328842409. The reversal of 1328842404 is 4042488231.

1328842404 is a `hidden beast` number, since 132 + 88 + 42 + 404 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1328842409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 594244 + ... + 596475.

Almost surely, 2^1328842404 is an apocalyptic number.

It is an amenable number.

1328842404 is an abundant number, since it is smaller than the sum of its proper divisors (2138534236).

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

1328842404 is a wasteful number, since it uses less digits than its factorization.

1328842404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190760 (or 1190755 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 1328842404 is about 36453.2907156542. The cubic root of 1328842404 is about 1099.4052994776.

The spelling of 1328842404 in words is "one billion, three hundred twenty-eight million, eight hundred forty-two thousand, four hundred four".