Search a number
-
+
308379078 = 232723106411
BaseRepresentation
bin10010011000010…
…111110111000110
3210111021021120100
4102120113313012
51112421112303
650333344530
710433115240
oct2230276706
9714237510
10308379078
11149087847
1287338146
134bb72937
142cd55090
151c1168a3
hex12617dc6

308379078 has 48 divisors (see below), whose sum is σ = 796813056. Its totient is φ = 84276720.

The previous prime is 308379061. The next prime is 308379143. The reversal of 308379078 is 870973803.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50308 + ... + 56103.

It is an arithmetic number, because the mean of its divisors is an integer number (16600272).

Almost surely, 2308379078 is an apocalyptic number.

308379078 is an abundant number, since it is smaller than the sum of its proper divisors (488433978).

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

308379078 is a wasteful number, since it uses less digits than its factorization.

308379078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106449 (or 106446 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 308379078 is about 17560.7254405961. The cubic root of 308379078 is about 675.6082878802.

The spelling of 308379078 in words is "three hundred eight million, three hundred seventy-nine thousand, seventy-eight".

Divisors: 1 2 3 6 7 9 14 18 21 23 42 46 63 69 126 138 161 207 322 414 483 966 1449 2898 106411 212822 319233 638466 744877 957699 1489754 1915398 2234631 2447453 4469262 4894906 6703893 7342359 13407786 14684718 17132171 22027077 34264342 44054154 51396513 102793026 154189539 308379078