Search a number
-
+
80110381 = 136162337
BaseRepresentation
bin1001100011001…
…10001100101101
312120202000210011
410301212030231
5131002013011
611541013221
71661632651
oct461461455
9176660704
1080110381
114124712a
12229b4211
131379b6c0
14a8d4a61
157076621
hex4c6632d

80110381 has 4 divisors (see below), whose sum is σ = 86272732. Its totient is φ = 73948032.

The previous prime is 80110379. The next prime is 80110391. The reversal of 80110381 is 18301108.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32376100 + 47734281 = 5690^2 + 6909^2 .

It is a cyclic number.

It is not a de Polignac number, because 80110381 - 21 = 80110379 is a prime.

It is a super-2 number, since 2×801103812 = 12835346287930322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80110321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3081156 + ... + 3081181.

It is an arithmetic number, because the mean of its divisors is an integer number (21568183).

Almost surely, 280110381 is an apocalyptic number.

It is an amenable number.

80110381 is a deficient number, since it is larger than the sum of its proper divisors (6162351).

80110381 is a wasteful number, since it uses less digits than its factorization.

80110381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6162350.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 80110381 is about 8950.4402685008. The cubic root of 80110381 is about 431.0850208115.

Adding to 80110381 its reverse (18301108), we get a palindrome (98411489).

The spelling of 80110381 in words is "eighty million, one hundred ten thousand, three hundred eighty-one".

Divisors: 1 13 6162337 80110381