Search a number
-
+
387680208 = 24350316057
BaseRepresentation
bin10111000110111…
…000011111010000
31000000111012021020
4113012320133100
51243221231313
6102245155440
712415140666
oct2706703720
91000435236
10387680208
11189920973
12a99bbb80
1362419b96
14396b8c36
152407d323
hex171b87d0

387680208 has 40 divisors (see below), whose sum is σ = 1003560768. Its totient is φ = 128961792.

The previous prime is 387680201. The next prime is 387680219. The reversal of 387680208 is 802086783.

It is a self number, because there is not a number n which added to its sum of digits gives 387680208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387680201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16116 + ... + 32172.

Almost surely, 2387680208 is an apocalyptic number.

It is an amenable number.

387680208 is an abundant number, since it is smaller than the sum of its proper divisors (615880560).

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

387680208 is a wasteful number, since it uses less digits than its factorization.

387680208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16571 (or 16565 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 387680208 is about 19689.5964407603. The cubic root of 387680208 is about 729.1628659844.

The spelling of 387680208 in words is "three hundred eighty-seven million, six hundred eighty thousand, two hundred eight".

Divisors: 1 2 3 4 6 8 12 16 24 48 503 1006 1509 2012 3018 4024 6036 8048 12072 16057 24144 32114 48171 64228 96342 128456 192684 256912 385368 770736 8076671 16153342 24230013 32306684 48460026 64613368 96920052 129226736 193840104 387680208