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227680940 = 22514976403
BaseRepresentation
bin11011001001000…
…10001010101100
3120212102101112102
431210202022230
5431241242230
634331554232
75433153554
oct1544421254
9525371472
10227680940
1110757a073
12642bb978
1338229866
142234a164
1514ec6045
hexd9222ac

227680940 has 24 divisors (see below), whose sum is σ = 481345200. Its totient is φ = 90459968.

The previous prime is 227680939. The next prime is 227680961. The reversal of 227680940 is 49086722.

It is a super-2 number, since 2×2276809402 = 103677220878567200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 227680894 and 227680903.

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, 35222 + ... + 41181.

It is an arithmetic number, because the mean of its divisors is an integer number (20056050).

Almost surely, 2227680940 is an apocalyptic number.

227680940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227680940 is an abundant number, since it is smaller than the sum of its proper divisors (253664260).

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

227680940 is a wasteful number, since it uses less digits than its factorization.

227680940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76561 (or 76559 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 227680940 is about 15089.1000394324. The cubic root of 227680940 is about 610.6263744182.

The spelling of 227680940 in words is "two hundred twenty-seven million, six hundred eighty thousand, nine hundred forty".

Divisors: 1 2 4 5 10 20 149 298 596 745 1490 2980 76403 152806 305612 382015 764030 1528060 11384047 22768094 45536188 56920235 113840470 227680940