1328067636 has 48 divisors (see below), whose sum is σ = 3554361216. Its totient is φ = 378071424.

The previous prime is 1328067623. The next prime is 1328067641. The reversal of 1328067636 is 6367608231.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5271 + ... + 51806.

It is an arithmetic number, because the mean of its divisors is an integer number (74049192).

Almost surely, 2^1328067636 is an apocalyptic number.

It is an amenable number.

1328067636 is an abundant number, since it is smaller than the sum of its proper divisors (2226293580).

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

1328067636 is a wasteful number, since it uses less digits than its factorization.

1328067636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57368 (or 57366 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 1328067636 is about 36442.6623066976. The cubic root of 1328067636 is about 1099.1915922595.

The spelling of 1328067636 in words is "one billion, three hundred twenty-eight million, sixty-seven thousand, six hundred thirty-six".