330280749 has 6 divisors (see below), whose sum is σ = 477072206. Its totient is φ = 220187160.

The previous prime is 330280729. The next prime is 330280763. The reversal of 330280749 is 947082033.

330280749 is a `hidden beast` number, since 330 + 280 + 7 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 327356649 + 2924100 = 18093^2 + 1710^2 .

It is not a de Polignac number, because 330280749 - 2¹⁹ = 329756461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330280729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18348922 + ... + 18348939.

Almost surely, 2^330280749 is an apocalyptic number.

It is an amenable number.

330280749 is a deficient number, since it is larger than the sum of its proper divisors (146791457).

330280749 is a wasteful number, since it uses less digits than its factorization.

330280749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36697867 (or 36697864 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 330280749 is about 18173.6278436640. The cubic root of 330280749 is about 691.2382365860.

The spelling of 330280749 in words is "three hundred thirty million, two hundred eighty thousand, seven hundred forty-nine".