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80817230 = 2513621671
BaseRepresentation
bin1001101000100…
…10110001001110
312122001221101202
410310102301032
5131142122410
612004105502
72000635514
oct464226116
9178057352
1080817230
114168a1aa
1223095292
1313988360
14aa3a4b4
157165ca5
hex4d12c4e

80817230 has 16 divisors (see below), whose sum is σ = 156661344. Its totient is φ = 29840160.

The previous prime is 80817211. The next prime is 80817263. The reversal of 80817230 is 3271808.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80817193 and 80817202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310706 + ... + 310965.

It is an arithmetic number, because the mean of its divisors is an integer number (9791334).

Almost surely, 280817230 is an apocalyptic number.

80817230 is a deficient number, since it is larger than the sum of its proper divisors (75844114).

80817230 is a wasteful number, since it uses less digits than its factorization.

80817230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621691.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 80817230 is about 8989.8403767809. The cubic root of 80817230 is about 432.3491939726.

The spelling of 80817230 in words is "eighty million, eight hundred seventeen thousand, two hundred thirty".

Divisors: 1 2 5 10 13 26 65 130 621671 1243342 3108355 6216710 8081723 16163446 40408615 80817230