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71344233 = 34880793
BaseRepresentation
bin1000100000010…
…10000001101001
311222020122220000
410100022001221
5121231003413
611025053213
71524262452
oct420120151
9158218800
1071344233
11372a9a84
121ba87209
1311a1c62c
149692129
1563e4073
hex440a069

71344233 has 10 divisors (see below), whose sum is σ = 106576074. Its totient is φ = 47562768.

The previous prime is 71344211. The next prime is 71344243. The reversal of 71344233 is 33244317.

It can be written as a sum of positive squares in only one way, i.e., 61591104 + 9753129 = 7848^2 + 3123^2 .

It is not a de Polignac number, because 71344233 - 220 = 70295657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 71344197 and 71344206.

It is not an unprimeable number, because it can be changed into a prime (71344243) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 440316 + ... + 440477.

Almost surely, 271344233 is an apocalyptic number.

It is an amenable number.

71344233 is a deficient number, since it is larger than the sum of its proper divisors (35231841).

71344233 is an equidigital number, since it uses as much as digits as its factorization.

71344233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880805 (or 880796 counting only the distinct ones).

The product of its digits is 6048, while the sum is 27.

The square root of 71344233 is about 8446.5515448614. The cubic root of 71344233 is about 414.7499010820.

The spelling of 71344233 in words is "seventy-one million, three hundred forty-four thousand, two hundred thirty-three".

Divisors: 1 3 9 27 81 880793 2642379 7927137 23781411 71344233