1328505850 has 96 divisors (see below), whose sum is σ = 2889029376. Its totient is φ = 445132800.

The previous prime is 1328505833. The next prime is 1328505881. The reversal of 1328505850 is 585058231.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4795912 + ... + 4796188.

It is an arithmetic number, because the mean of its divisors is an integer number (30094056).

Almost surely, 2^1328505850 is an apocalyptic number.

1328505850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1328505850 is an abundant number, since it is smaller than the sum of its proper divisors (1560523526).

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

1328505850 is a wasteful number, since it uses less digits than its factorization.

1328505850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 37.

The square root of 1328505850 is about 36448.6741871361. The cubic root of 1328505850 is about 1099.3124767090.

The spelling of 1328505850 in words is "one billion, three hundred twenty-eight million, five hundred five thousand, eight hundred fifty".