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65230380 = 223351131069
BaseRepresentation
bin1111100011010…
…1011000101100
311112202001021000
43320311120230
5113144333010
610250040300
71421310015
oct370653054
9145661230
1065230380
1133903606
1219a19090
131068b877
14894000c
155ad77c0
hex3e3562c

65230380 has 96 divisors (see below), whose sum is σ = 204926400. Its totient is φ = 17224704.

The previous prime is 65230351. The next prime is 65230381. The reversal of 65230380 is 8303256.

65230380 is a `hidden beast` number, since 652 + 3 + 0 + 3 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (65230381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60486 + ... + 61554.

It is an arithmetic number, because the mean of its divisors is an integer number (2134650).

Almost surely, 265230380 is an apocalyptic number.

65230380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65230380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102463200).

65230380 is an abundant number, since it is smaller than the sum of its proper divisors (139696020).

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

65230380 is a wasteful number, since it uses less digits than its factorization.

65230380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 1192 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 65230380 is about 8076.5326718834. The cubic root of 65230380 is about 402.5470387267.

The spelling of 65230380 in words is "sixty-five million, two hundred thirty thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 108 113 135 180 226 270 339 452 540 565 678 1017 1069 1130 1356 1695 2034 2138 2260 3051 3207 3390 4068 4276 5085 5345 6102 6414 6780 9621 10170 10690 12204 12828 15255 16035 19242 20340 21380 28863 30510 32070 38484 48105 57726 61020 64140 96210 115452 120797 144315 192420 241594 288630 362391 483188 577260 603985 724782 1087173 1207970 1449564 1811955 2174346 2415940 3261519 3623910 4348692 5435865 6523038 7247820 10871730 13046076 16307595 21743460 32615190 65230380