1328087430 has 96 divisors (see below), whose sum is σ = 3774221568. Its totient is φ = 322560000.

The previous prime is 1328087429. The next prime is 1328087437. The reversal of 1328087430 is 347808231.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328087437) 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, 33430 + ... + 61430.

It is an arithmetic number, because the mean of its divisors is an integer number (39314808).

Almost surely, 2^1328087430 is an apocalyptic number.

1328087430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1328087430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1887110784).

1328087430 is an abundant number, since it is smaller than the sum of its proper divisors (2446134138).

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

1328087430 is a wasteful number, since it uses less digits than its factorization.

1328087430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28062 (or 28059 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 1328087430 is about 36442.9338829903. The cubic root of 1328087430 is about 1099.1970531487.

The spelling of 1328087430 in words is "one billion, three hundred twenty-eight million, eighty-seven thousand, four hundred thirty".