Search a number
-
+
208742495 = 51322314401
BaseRepresentation
bin11000111000100…
…10100001011111
3112112210012212112
430130102201133
5411414224440
632414024235
75113165463
oct1434224137
9475705775
10208742495
11a7914365
1259aa807b
1334328690
141da1a4a3
15134d4965
hexc71285f

208742495 has 16 divisors (see below), whose sum is σ = 270988032. Its totient is φ = 153446400.

The previous prime is 208742489. The next prime is 208742497. The reversal of 208742495 is 594247802.

208742495 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 208742495 - 210 = 208741471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208742497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7295 + ... + 21695.

It is an arithmetic number, because the mean of its divisors is an integer number (16936752).

Almost surely, 2208742495 is an apocalyptic number.

208742495 is a deficient number, since it is larger than the sum of its proper divisors (62245537).

208742495 is a wasteful number, since it uses less digits than its factorization.

208742495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14642.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 208742495 is about 14447.9235532308. The cubic root of 208742495 is about 593.2033887955.

The spelling of 208742495 in words is "two hundred eight million, seven hundred forty-two thousand, four hundred ninety-five".

Divisors: 1 5 13 65 223 1115 2899 14401 14495 72005 187213 936065 3211423 16057115 41748499 208742495