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80270105 = 516054021
BaseRepresentation
bin1001100100011…
…01001100011001
312121001010212212
410302031030121
5131022120410
611544244505
71663166426
oct462151431
9177033785
1080270105
1141346133
1222a70735
1313826306
14a936d4d
1570a8b05
hex4c8d319

80270105 has 4 divisors (see below), whose sum is σ = 96324132. Its totient is φ = 64216080.

The previous prime is 80270093. The next prime is 80270147. The reversal of 80270105 is 50107208.

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 25080064 + 55190041 = 5008^2 + 7429^2 .

It is not a de Polignac number, because 80270105 - 24 = 80270089 is a prime.

It is a super-2 number, since 2×802701052 = 12886579513422050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8027006 + ... + 8027015.

It is an arithmetic number, because the mean of its divisors is an integer number (24081033).

Almost surely, 280270105 is an apocalyptic number.

It is an amenable number.

80270105 is a deficient number, since it is larger than the sum of its proper divisors (16054027).

80270105 is a wasteful number, since it uses less digits than its factorization.

80270105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16054026.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 80270105 is about 8959.3585149831. The cubic root of 80270105 is about 431.3713295806.

It can be divided in two parts, 802 and 70105, that added together give a palindrome (70907).

The spelling of 80270105 in words is "eighty million, two hundred seventy thousand, one hundred five".

Divisors: 1 5 16054021 80270105