[go: up one dir, main page]

Search a number
-
+
80208111 = 340036679
BaseRepresentation
bin1001100011111…
…10000011101111
312120220222211210
410301332003233
5131013124421
611543045503
71662520614
oct461760357
9176828753
1080208111
11413035a5
1222a40893
1313804029
14a91c50b
157095576
hex4c7e0ef

80208111 has 8 divisors (see below), whose sum is σ = 106986880. Its totient is φ = 53450712.

The previous prime is 80208109. The next prime is 80208127. The reversal of 80208111 is 11180208.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80208111 - 21 = 80208109 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 (80208131) 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, 8670 + ... + 15348.

It is an arithmetic number, because the mean of its divisors is an integer number (13373360).

Almost surely, 280208111 is an apocalyptic number.

80208111 is a deficient number, since it is larger than the sum of its proper divisors (26778769).

80208111 is a wasteful number, since it uses less digits than its factorization.

80208111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10685.

The product of its (nonzero) digits is 128, while the sum is 21.

The square root of 80208111 is about 8955.8981124173. The cubic root of 80208111 is about 431.2602491158.

Adding to 80208111 its reverse (11180208), we get a palindrome (91388319).

The spelling of 80208111 in words is "eighty million, two hundred eight thousand, one hundred eleven".

Divisors: 1 3 4003 6679 12009 20037 26736037 80208111