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71349028 = 2219938803
BaseRepresentation
bin1000100000010…
…11001100100100
311222020220110121
410100023030210
5121231132103
611025131324
71524312442
oct420131444
9158226417
1071349028
1137302643
121ba89b44
1311a2187a
149693b92
1563e56bd
hex440b324

71349028 has 12 divisors (see below), whose sum is σ = 131432560. Its totient is φ = 33796872.

The previous prime is 71348989. The next prime is 71349053. The reversal of 71349028 is 82094317.

It is a junction number, because it is equal to n+sod(n) for n = 71348984 and 71349002.

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, 469326 + ... + 469477.

Almost surely, 271349028 is an apocalyptic number.

It is an amenable number.

71349028 is a deficient number, since it is larger than the sum of its proper divisors (60083532).

71349028 is a wasteful number, since it uses less digits than its factorization.

71349028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938826 (or 938824 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 71349028 is about 8446.8353837399. The cubic root of 71349028 is about 414.7591925652.

The spelling of 71349028 in words is "seventy-one million, three hundred forty-nine thousand, twenty-eight".

Divisors: 1 2 4 19 38 76 938803 1877606 3755212 17837257 35674514 71349028