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230900280 = 233513148013
BaseRepresentation
bin11011100001101…
…00001000111000
3121002110221122020
431300310020320
5433102302110
634524554440
75502422442
oct1560641070
9532427566
10230900280
11109378886
12653b2a20
1338ab5cb0
1422947492
151540ed70
hexdc34238

230900280 has 64 divisors (see below), whose sum is σ = 745990560. Its totient is φ = 56836608.

The previous prime is 230900279. The next prime is 230900303. The reversal of 230900280 is 82009032.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 230900280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72447 + ... + 75566.

Almost surely, 2230900280 is an apocalyptic number.

230900280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230900280 is an abundant number, since it is smaller than the sum of its proper divisors (515090280).

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

230900280 is a wasteful number, since it uses less digits than its factorization.

230900280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148040 (or 148036 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 230900280 is about 15195.4032522997. The cubic root of 230900280 is about 613.4909395957.

The spelling of 230900280 in words is "two hundred thirty million, nine hundred thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 13 15 20 24 26 30 39 40 52 60 65 78 104 120 130 156 195 260 312 390 520 780 1560 148013 296026 444039 592052 740065 888078 1184104 1480130 1776156 1924169 2220195 2960260 3552312 3848338 4440390 5772507 5920520 7696676 8880780 9620845 11545014 15393352 17761560 19241690 23090028 28862535 38483380 46180056 57725070 76966760 115450140 230900280