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227630660 = 22537307609
BaseRepresentation
bin11011001000101…
…01111001000100
3120212022211120012
431210111321010
5431233140120
634330525352
75432554145
oct1544257104
9525284505
10227630660
11107545314
1264296858
133820c9ca
1422335acc
1514eb61c5
hexd915e44

227630660 has 24 divisors (see below), whose sum is σ = 490945560. Its totient is φ = 88591104.

The previous prime is 227630653. The next prime is 227630671. The reversal of 227630660 is 66036722.

It can be written as a sum of positive squares in 4 ways, for example, as 23483716 + 204146944 = 4846^2 + 14288^2 .

It is a plaindrome in base 14.

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 7 ways as a sum of consecutive naturals, for example, 153065 + ... + 154544.

It is an arithmetic number, because the mean of its divisors is an integer number (20456065).

Almost surely, 2227630660 is an apocalyptic number.

227630660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227630660 is an abundant number, since it is smaller than the sum of its proper divisors (263314900).

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

227630660 is a wasteful number, since it uses less digits than its factorization.

227630660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307655 (or 307653 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 227630660 is about 15087.4338440969. The cubic root of 227630660 is about 610.5814218127.

The spelling of 227630660 in words is "two hundred twenty-seven million, six hundred thirty thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 37 74 148 185 370 740 307609 615218 1230436 1538045 3076090 6152180 11381533 22763066 45526132 56907665 113815330 227630660