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304040319 = 31122514093
BaseRepresentation
bin10010000111110…
…100100101111111
3210012002211220120
4102013310211333
51110313242234
650100350023
710351204632
oct2207644577
9705084816
10304040319
11146693aa0
12859a5313
134acb3b1b
142c545c19
151ba5b049
hex121f497f

304040319 has 16 divisors (see below), whose sum is σ = 442545024. Its totient is φ = 184140000.

The previous prime is 304040293. The next prime is 304040327. The reversal of 304040319 is 913040403.

It is not a de Polignac number, because 304040319 - 211 = 304038271 is a prime.

It is a super-2 number, since 2×3040403192 = 184881031155243522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304040329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72237 + ... + 76329.

It is an arithmetic number, because the mean of its divisors is an integer number (27659064).

Almost surely, 2304040319 is an apocalyptic number.

304040319 is a deficient number, since it is larger than the sum of its proper divisors (138504705).

304040319 is a wasteful number, since it uses less digits than its factorization.

304040319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6358.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 304040319 is about 17436.7519624499. The cubic root of 304040319 is about 672.4248062489.

The spelling of 304040319 in words is "three hundred four million, forty thousand, three hundred nineteen".

Divisors: 1 3 11 33 2251 4093 6753 12279 24761 45023 74283 135069 9213343 27640029 101346773 304040319