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238395144 = 2331337107193
BaseRepresentation
bin11100011010110…
…01111100001000
3121121120201122210
432031121330020
5442012121034
635353345120
75623216401
oct1615317410
9547521583
10238395144
11112627889
1267a081a0
133a50b520
14239389a8
1515de08e9
hexe359f08

238395144 has 128 divisors (see below), whose sum is σ = 668787840. Its totient is φ = 70336512.

The previous prime is 238395127. The next prime is 238395191. The reversal of 238395144 is 441593832.

238395144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1235112 + ... + 1235304.

It is an arithmetic number, because the mean of its divisors is an integer number (5224905).

Almost surely, 2238395144 is an apocalyptic number.

238395144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238395144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334393920).

238395144 is an abundant number, since it is smaller than the sum of its proper divisors (430392696).

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

238395144 is a wasteful number, since it uses less digits than its factorization.

238395144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 355 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 238395144 is about 15440.0499999190. The cubic root of 238395144 is about 620.0582186052.

The spelling of 238395144 in words is "two hundred thirty-eight million, three hundred ninety-five thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 12 13 24 26 37 39 52 74 78 104 107 111 148 156 193 214 222 296 312 321 386 428 444 481 579 642 772 856 888 962 1158 1284 1391 1443 1544 1924 2316 2509 2568 2782 2886 3848 3959 4173 4632 5018 5564 5772 7141 7527 7918 8346 10036 11128 11544 11877 14282 15054 15836 16692 20072 20651 21423 23754 28564 30108 31672 33384 41302 42846 47508 51467 57128 60216 61953 82604 85692 92833 95016 102934 123906 154401 165208 171384 185666 205868 247812 268463 278499 308802 371332 411736 495624 536926 556998 617604 742664 764087 805389 1073852 1113996 1235208 1528174 1610778 2147704 2227992 2292261 3056348 3221556 4584522 6112696 6443112 9169044 9933131 18338088 19866262 29799393 39732524 59598786 79465048 119197572 238395144