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80071533 = 32231792161
BaseRepresentation
bin1001100010111…
…00101101101101
312120200001111100
410301130231231
5130444242113
611540113313
71661411463
oct461345555
9176601440
1080071533
114121aa23
1222995839
1313786b09
14a8c4833
157069d73
hex4c5cb6d

80071533 has 24 divisors (see below), whose sum is σ = 121417920. Its totient is φ = 50751360.

The previous prime is 80071531. The next prime is 80071553. The reversal of 80071533 is 33517008.

It is not a de Polignac number, because 80071533 - 21 = 80071531 is a prime.

It is a super-2 number, since 2×800715332 = 12822900793940178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80071497 and 80071506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80071531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35973 + ... + 38133.

It is an arithmetic number, because the mean of its divisors is an integer number (5059080).

Almost surely, 280071533 is an apocalyptic number.

It is an amenable number.

80071533 is a deficient number, since it is larger than the sum of its proper divisors (41346387).

80071533 is a wasteful number, since it uses less digits than its factorization.

80071533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369 (or 2366 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 80071533 is about 8948.2698327666. The cubic root of 80071533 is about 431.0153273942.

The spelling of 80071533 in words is "eighty million, seventy-one thousand, five hundred thirty-three".

Divisors: 1 3 9 23 69 179 207 537 1611 2161 4117 6483 12351 19449 37053 49703 149109 386819 447327 1160457 3481371 8896837 26690511 80071533