328805780 has 12 divisors (see below), whose sum is σ = 690492180. Its totient is φ = 131522304.

The previous prime is 328805779. The next prime is 328805831. The reversal of 328805780 is 87508823.

It can be written as a sum of positive squares in 2 ways, for example, as 145636624 + 183169156 = 12068^2 + 13534^2 .

It is a super-2 number, since 2×328805780² = 216226481922816800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8220125 + ... + 8220164.

It is an arithmetic number, because the mean of its divisors is an integer number (57541015).

Almost surely, 2^328805780 is an apocalyptic number.

It is an amenable number.

328805780 is an abundant number, since it is smaller than the sum of its proper divisors (361686400).

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

328805780 is a wasteful number, since it uses less digits than its factorization.

328805780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16440298 (or 16440296 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 328805780 is about 18133.0025092371. The cubic root of 328805780 is about 690.2077229384.

The spelling of 328805780 in words is "three hundred twenty-eight million, eight hundred five thousand, seven hundred eighty".