Search a number
-
+
304213413 = 37212831613
BaseRepresentation
bin10010001000011…
…110110110100101
3210012102122100110
4102020132312211
51110334312123
650104203233
710352525400
oct2210366645
9705378313
10304213413
111467a2049
1285a69519
134b04484a
142c58cd37
151ba92493
hex1221eda5

304213413 has 24 divisors (see below), whose sum is σ = 472501728. Its totient is φ = 173593056.

The previous prime is 304213367. The next prime is 304213457. The reversal of 304213413 is 314312403.

It is not a de Polignac number, because 304213413 - 212 = 304209317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 304213413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304213493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187795 + ... + 189407.

It is an arithmetic number, because the mean of its divisors is an integer number (19687572).

Almost surely, 2304213413 is an apocalyptic number.

It is an amenable number.

304213413 is a deficient number, since it is larger than the sum of its proper divisors (168288315).

304213413 is a wasteful number, since it uses less digits than its factorization.

304213413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913 (or 2906 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 304213413 is about 17441.7147379494. The cubic root of 304213413 is about 672.5523886902.

Adding to 304213413 its reverse (314312403), we get a palindrome (618525816).

The spelling of 304213413 in words is "three hundred four million, two hundred thirteen thousand, four hundred thirteen".

Divisors: 1 3 7 21 49 147 1283 1613 3849 4839 8981 11291 26943 33873 62867 79037 188601 237111 2069479 6208437 14486353 43459059 101404471 304213413