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227660540 = 22561191977
BaseRepresentation
bin11011001000111…
…01001011111100
3120212101100112212
431210131023330
5431240114130
634331315552
75433040232
oct1544351374
9525340485
10227660540
11107565808
12642abbb8
13382204a3
1422342952
1514ebee95
hexd91d2fc

227660540 has 48 divisors (see below), whose sum is σ = 488968704. Its totient is φ = 89011200.

The previous prime is 227660507. The next prime is 227660551. The reversal of 227660540 is 45066722.

It is a junction number, because it is equal to n+sod(n) for n = 227660497 and 227660506.

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, 232532 + ... + 233508.

It is an arithmetic number, because the mean of its divisors is an integer number (10186848).

Almost surely, 2227660540 is an apocalyptic number.

227660540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227660540 is an abundant number, since it is smaller than the sum of its proper divisors (261308164).

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

227660540 is a wasteful number, since it uses less digits than its factorization.

227660540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 227660540 is about 15088.4240396405. The cubic root of 227660540 is about 610.6081366889.

The spelling of 227660540 in words is "two hundred twenty-seven million, six hundred sixty thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 61 122 191 244 305 382 610 764 955 977 1220 1910 1954 3820 3908 4885 9770 11651 19540 23302 46604 58255 59597 116510 119194 186607 233020 238388 297985 373214 595970 746428 933035 1191940 1866070 3732140 11383027 22766054 45532108 56915135 113830270 227660540