Search a number
-
+
71982095 = 514396419
BaseRepresentation
bin1000100101001…
…01110000001111
312000110001212112
410102211300033
5121411411340
611050454235
71532560223
oct422456017
9160401775
1071982095
11376a5239
122013437b
1311bb3a73
1497ba783
1564bd065
hex44a5c0f

71982095 has 4 divisors (see below), whose sum is σ = 86378520. Its totient is φ = 57585672.

The previous prime is 71982091. The next prime is 71982133. The reversal of 71982095 is 59028917.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59028917 = 466312659.

It is a cyclic number.

It is not a de Polignac number, because 71982095 - 22 = 71982091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71982091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7198205 + ... + 7198214.

It is an arithmetic number, because the mean of its divisors is an integer number (21594630).

Almost surely, 271982095 is an apocalyptic number.

71982095 is a deficient number, since it is larger than the sum of its proper divisors (14396425).

71982095 is a wasteful number, since it uses less digits than its factorization.

71982095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14396424.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 71982095 is about 8484.2262463940. The cubic root of 71982095 is about 415.9822766580.

The spelling of 71982095 in words is "seventy-one million, nine hundred eighty-two thousand, ninety-five".

Divisors: 1 5 14396419 71982095