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227385940 = 22567169691
BaseRepresentation
bin11011000110110…
…10001001010100
3120211212101212111
431203122021110
5431202322230
634321400404
75430514525
oct1543321124
9524771774
10227385940
11107398471
1264199104
13381554c2
14222b084c
1514e6892a
hexd8da254

227385940 has 24 divisors (see below), whose sum is σ = 484640352. Its totient is φ = 89596320.

The previous prime is 227385913. The next prime is 227385943. The reversal of 227385940 is 49583722.

It is a junction number, because it is equal to n+sod(n) for n = 227385893 and 227385902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227385943) by changing a digit.

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, 83506 + ... + 86185.

It is an arithmetic number, because the mean of its divisors is an integer number (20193348).

Almost surely, 2227385940 is an apocalyptic number.

227385940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227385940 is an abundant number, since it is smaller than the sum of its proper divisors (257254412).

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

227385940 is a wasteful number, since it uses less digits than its factorization.

227385940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169767 (or 169765 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 227385940 is about 15079.3216027778. The cubic root of 227385940 is about 610.3625364423.

The spelling of 227385940 in words is "two hundred twenty-seven million, three hundred eighty-five thousand, nine hundred forty".

Divisors: 1 2 4 5 10 20 67 134 268 335 670 1340 169691 339382 678764 848455 1696910 3393820 11369297 22738594 45477188 56846485 113692970 227385940