330780305 has 16 divisors (see below), whose sum is σ = 421801344. Its totient is φ = 248160000.

The previous prime is 330780287. The next prime is 330780311. The reversal of 330780305 is 503087033.

It is not a de Polignac number, because 330780305 - 2¹⁸ = 330518161 is a prime.

It is a super-2 number, since 2×330780305² = 218831220351786050, which contains 22 as substring.

It is a Duffinian 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, 17180 + ... + 30930.

It is an arithmetic number, because the mean of its divisors is an integer number (26362584).

Almost surely, 2^330780305 is an apocalyptic number.

It is an amenable number.

330780305 is a deficient number, since it is larger than the sum of its proper divisors (91021039).

330780305 is a wasteful number, since it uses less digits than its factorization.

330780305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14056.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 330780305 is about 18187.3666318134. The cubic root of 330780305 is about 691.5865647468.

The spelling of 330780305 in words is "three hundred thirty million, seven hundred eighty thousand, three hundred five".