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227147980 = 22556320173
BaseRepresentation
bin11011000101000…
…00000011001100
3120211102022110011
431202200003030
5431122213410
634312323004
75425504003
oct1542400314
9524368404
10227147980
11107245704
12640a3464
13380a10b7
142224bc3a
1514e1d18a
hexd8a00cc

227147980 has 24 divisors (see below), whose sum is σ = 477881712. Its totient is φ = 90693312.

The previous prime is 227147971. The next prime is 227147993. The reversal of 227147980 is 89741722.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1174 + ... + 21346.

It is an arithmetic number, because the mean of its divisors is an integer number (19911738).

Almost surely, 2227147980 is an apocalyptic number.

227147980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227147980 is an abundant number, since it is smaller than the sum of its proper divisors (250733732).

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

227147980 is a wasteful number, since it uses less digits than its factorization.

227147980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20745 (or 20743 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 227147980 is about 15071.4292620176. The cubic root of 227147980 is about 610.1495467796.

The spelling of 227147980 in words is "two hundred twenty-seven million, one hundred forty-seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 563 1126 2252 2815 5630 11260 20173 40346 80692 100865 201730 403460 11357399 22714798 45429596 56786995 113573990 227147980