Search a number
-
+
384030161 = 1133398497
BaseRepresentation
bin10110111000111…
…101010111010001
3222202121202100022
4112320331113101
51241302431121
6102035033225
712342126314
oct2670752721
9882552308
10384030161
111878585a9
12a873b815
136173c6a8
143900897b
1523aabaab
hex16e3d5d1

384030161 has 4 divisors (see below), whose sum is σ = 387428772. Its totient is φ = 380631552.

The previous prime is 384030133. The next prime is 384030193. The reversal of 384030161 is 161030483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161030483 = 533038311.

It can be written as a sum of positive squares in 2 ways, for example, as 197571136 + 186459025 = 14056^2 + 13655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-384030161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 384030161.

It is not an unprimeable number, because it can be changed into a prime (384033161) 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 3 ways as a sum of consecutive naturals, for example, 1699136 + ... + 1699361.

It is an arithmetic number, because the mean of its divisors is an integer number (96857193).

Almost surely, 2384030161 is an apocalyptic number.

It is an amenable number.

384030161 is a deficient number, since it is larger than the sum of its proper divisors (3398611).

384030161 is a wasteful number, since it uses less digits than its factorization.

384030161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3398610.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 384030161 is about 19596.6875006977. The cubic root of 384030161 is about 726.8672665562.

The spelling of 384030161 in words is "three hundred eighty-four million, thirty thousand, one hundred sixty-one".

Divisors: 1 113 3398497 384030161