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238080180 = 223513305231
BaseRepresentation
bin11100011000011…
…01000010110100
3121120222201121110
432030031002310
5441422031210
635342515020
75620435212
oct1614150264
9546881543
10238080180
11112432188
1267895a70
133a42b060
1423895cb2
1515d7c420
hexe30d0b4

238080180 has 48 divisors (see below), whose sum is σ = 717905664. Its totient is φ = 58604160.

The previous prime is 238080149. The next prime is 238080209. The reversal of 238080180 is 81080832.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151836 + ... + 153395.

It is an arithmetic number, because the mean of its divisors is an integer number (14956368).

Almost surely, 2238080180 is an apocalyptic number.

238080180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238080180 is an abundant number, since it is smaller than the sum of its proper divisors (479825484).

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

238080180 is a wasteful number, since it uses less digits than its factorization.

238080180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305256 (or 305254 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 238080180 is about 15429.8470504409. The cubic root of 238080180 is about 619.7850277954.

The spelling of 238080180 in words is "two hundred thirty-eight million, eighty thousand, one hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 130 156 195 260 390 780 305231 610462 915693 1220924 1526155 1831386 3052310 3662772 3968003 4578465 6104620 7936006 9156930 11904009 15872012 18313860 19840015 23808018 39680030 47616036 59520045 79360060 119040090 238080180