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155141248 = 274371397
BaseRepresentation
bin10010011111101…
…00010010000000
3101210220222210011
421033310102000
5304204004443
623221114304
73562451563
oct1117642200
9353828704
10155141248
117a633a09
1243b58994
13261ac072
14168664da
15d947b9d
hex93f4480

155141248 has 64 divisors (see below), whose sum is σ = 321520320. Its totient is φ = 74511360.

The previous prime is 155141237. The next prime is 155141249. The reversal of 155141248 is 842141551.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (155141249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390586 + ... + 390982.

It is an arithmetic number, because the mean of its divisors is an integer number (5023755).

Almost surely, 2155141248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155141248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160760160).

155141248 is an abundant number, since it is smaller than the sum of its proper divisors (166379072).

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

155141248 is an equidigital number, since it uses as much as digits as its factorization.

155141248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 513 counting only the distinct ones).

The product of its digits is 6400, while the sum is 31.

The square root of 155141248 is about 12455.5709624248. The cubic root of 155141248 is about 537.3316558075.

Adding to 155141248 its reverse (842141551), we get a palindrome (997282799).

The spelling of 155141248 in words is "one hundred fifty-five million, one hundred forty-one thousand, two hundred forty-eight".

Divisors: 1 2 4 8 16 32 43 64 71 86 128 142 172 284 344 397 568 688 794 1136 1376 1588 2272 2752 3053 3176 4544 5504 6106 6352 9088 12212 12704 17071 24424 25408 28187 34142 48848 50816 56374 68284 97696 112748 136568 195392 225496 273136 390784 450992 546272 901984 1092544 1212041 1803968 2185088 2424082 3607936 4848164 9696328 19392656 38785312 77570624 155141248