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238082985 = 32572712789
BaseRepresentation
bin11100011000011…
…01101110101001
3121120222212110100
432030031232221
5441422123420
635342540013
75620446330
oct1614155651
9546885410
10238082985
111124342a8
1267897609
133a42c40a
1423896d17
1515d7d190
hexe30dba9

238082985 has 48 divisors (see below), whose sum is σ = 473541120. Its totient is φ = 108397440.

The previous prime is 238082983. The next prime is 238082987. The reversal of 238082985 is 589280832.

It is an interprime number because it is at equal distance from previous prime (238082983) and next prime (238082987).

It is not a de Polignac number, because 238082985 - 21 = 238082983 is a prime.

It is a super-3 number, since 3×2380829853 (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 238082985.

It is not an unprimeable number, because it can be changed into a prime (238082983) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83971 + ... + 86759.

It is an arithmetic number, because the mean of its divisors is an integer number (9865440).

Almost surely, 2238082985 is an apocalyptic number.

It is an amenable number.

238082985 is a deficient number, since it is larger than the sum of its proper divisors (235458135).

238082985 is a wasteful number, since it uses less digits than its factorization.

238082985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078 (or 3075 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 238082985 is about 15429.9379454358. The cubic root of 238082985 is about 619.7874618356.

The spelling of 238082985 in words is "two hundred thirty-eight million, eighty-two thousand, nine hundred eighty-five".

Divisors: 1 3 5 7 9 15 21 35 45 63 105 271 315 813 1355 1897 2439 2789 4065 5691 8367 9485 12195 13945 17073 19523 25101 28455 41835 58569 85365 97615 125505 175707 292845 755819 878535 2267457 3779095 5290733 6802371 11337285 15872199 26453665 34011855 47616597 79360995 238082985