1328898880 has 28 divisors (see below), whose sum is σ = 3164441220. Its totient is φ = 531559424.

The previous prime is 1328898877. The next prime is 1328898887. The reversal of 1328898880 is 888988231.

It can be written as a sum of positive squares in 2 ways, for example, as 303874624 + 1025024256 = 17432^2 + 32016^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328898887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2076085 + ... + 2076724.

Almost surely, 2^1328898880 is an apocalyptic number.

1328898880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1328898880 is an abundant number, since it is smaller than the sum of its proper divisors (1835542340).

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

1328898880 is an equidigital number, since it uses as much as digits as its factorization.

1328898880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152826 (or 4152816 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 55.

The square root of 1328898880 is about 36454.0653425650. The cubic root of 1328898880 is about 1099.4208742199.

The spelling of 1328898880 in words is "one billion, three hundred twenty-eight million, eight hundred ninety-eight thousand, eight hundred eighty".