Search a number
-
+
227345780 = 22561307607
BaseRepresentation
bin11011000110100…
…00010101110100
3120211210100210002
431203100111310
5431200031110
634320450432
75430256454
oct1543202564
9524710702
10227345780
11107370282
1264179a18
133814013c
142229dd64
1514e5baa5
hexd8d0574

227345780 has 48 divisors (see below), whose sum is σ = 487635456. Its totient is φ = 89009280.

The previous prime is 227345749. The next prime is 227345791. The reversal of 227345780 is 87543722.

It is a super-2 number, since 2×2273457802 = 103372207367616800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374237 + ... + 374843.

It is an arithmetic number, because the mean of its divisors is an integer number (10159072).

Almost surely, 2227345780 is an apocalyptic number.

227345780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227345780 is an abundant number, since it is smaller than the sum of its proper divisors (260289676).

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

227345780 is a wasteful number, since it uses less digits than its factorization.

227345780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 227345780 is about 15077.9899190840. The cubic root of 227345780 is about 610.3266010591.

The spelling of 227345780 in words is "two hundred twenty-seven million, three hundred forty-five thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 61 122 244 305 307 607 610 614 1214 1220 1228 1535 2428 3035 3070 6070 6140 12140 18727 37027 37454 74054 74908 93635 148108 185135 186349 187270 370270 372698 374540 740540 745396 931745 1863490 3726980 11367289 22734578 45469156 56836445 113672890 227345780