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88012144404 = 2234271642421
BaseRepresentation
bin101000111110111101…
…1101011111100010100
322102011201101011220000
41101331323223330110
52420222102110104
6104233205411300
76234010612122
oct1217573537424
9272151334800
1088012144404
1134364619828
1215083109b30
1383b803a872
14438ccc4912
152451ab7639
hex147deebf14

88012144404 has 30 divisors (see below), whose sum is σ = 230081131434. Its totient is φ = 29337381360.

The previous prime is 88012144403. The next prime is 88012144421. The reversal of 88012144404 is 40444121088.

It can be written as a sum of positive squares in only one way, i.e., 86729072004 + 1283072400 = 294498^2 + 35820^2 .

It is a super-2 number, since 2×880121444042 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88012144403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 135820887 + ... + 135821534.

Almost surely, 288012144404 is an apocalyptic number.

It is an amenable number.

88012144404 is an abundant number, since it is smaller than the sum of its proper divisors (142068987030).

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

88012144404 is a wasteful number, since it uses less digits than its factorization.

88012144404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271642437 (or 271642426 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The spelling of 88012144404 in words is "eighty-eight billion, twelve million, one hundred forty-four thousand, four hundred four".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 324 271642421 543284842 814927263 1086569684 1629854526 2444781789 3259709052 4889563578 7334345367 9779127156 14668690734 22003036101 29337381468 44006072202 88012144404