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71235028 = 22194192237
BaseRepresentation
bin1000011111011…
…11010111010100
311222001010002101
410033233113110
5121214010103
611022451444
71523326204
oct417572724
9158033071
1071235028
1137234a27
121ba33b84
13119b1a07
149664404
1563c1a1d
hex43ef5d4

71235028 has 24 divisors (see below), whose sum is σ = 131594400. Its totient is φ = 33647328.

The previous prime is 71235013. The next prime is 71235029. The reversal of 71235028 is 82053217.

It is a junction number, because it is equal to n+sod(n) for n = 71234987 and 71235005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71235029) 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, 30726 + ... + 32962.

It is an arithmetic number, because the mean of its divisors is an integer number (5483100).

Almost surely, 271235028 is an apocalyptic number.

It is an amenable number.

71235028 is a deficient number, since it is larger than the sum of its proper divisors (60359372).

71235028 is a wasteful number, since it uses less digits than its factorization.

71235028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679 (or 2677 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 71235028 is about 8440.0845967324. The cubic root of 71235028 is about 414.5381769279.

The spelling of 71235028 in words is "seventy-one million, two hundred thirty-five thousand, twenty-eight".

Divisors: 1 2 4 19 38 76 419 838 1676 2237 4474 7961 8948 15922 31844 42503 85006 170012 937303 1874606 3749212 17808757 35617514 71235028