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230878836 = 223417167251
BaseRepresentation
bin11011100001011…
…10111001110100
3121002102212020000
431300232321310
5433101110321
634524311300
75502303066
oct1560567164
9532385200
10230878836
11109363761
12653a2530
1338aa92c6
142293d736
1515408826
hexdc2ee74

230878836 has 120 divisors (see below), whose sum is σ = 645454656. Its totient is φ = 71712000.

The previous prime is 230878811. The next prime is 230878847. The reversal of 230878836 is 638878032.

It is a junction number, because it is equal to n+sod(n) for n = 230878791 and 230878800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 919711 + ... + 919961.

Almost surely, 2230878836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230878836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322727328).

230878836 is an abundant number, since it is smaller than the sum of its proper divisors (414575820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230878836 is a wasteful number, since it uses less digits than its factorization.

230878836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 230878836 is about 15194.6976277911. The cubic root of 230878836 is about 613.4719471155.

The spelling of 230878836 in words is "two hundred thirty million, eight hundred seventy-eight thousand, eight hundred thirty-six".

Divisors: 1 2 3 4 6 9 12 17 18 27 34 36 51 54 68 81 102 108 153 162 167 204 251 306 324 334 459 501 502 612 668 753 918 1002 1004 1377 1503 1506 1836 2004 2259 2754 2839 3006 3012 4267 4509 4518 5508 5678 6012 6777 8517 8534 9018 9036 11356 12801 13527 13554 17034 17068 18036 20331 25551 25602 27054 27108 34068 38403 40662 41917 51102 51204 54108 76653 76806 81324 83834 102204 115209 125751 153306 153612 167668 229959 230418 251502 306612 345627 377253 459918 460836 503004 691254 712589 754506 919836 1131759 1382508 1425178 1509012 2137767 2263518 2850356 3395277 4275534 4527036 6413301 6790554 8551068 12826602 13581108 19239903 25653204 38479806 57719709 76959612 115439418 230878836