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89015747492 = 227261721193
BaseRepresentation
bin101001011100111000…
…0001000001110100100
322111202122211111111202
41102321300020032210
52424301012404432
6104520540222032
76300615240500
oct1227160101644
9274678744452
1089015747492
113482a083671
121530323a918
138517c39a49
1444462cd300
1524aec5b462
hex14b9c083a4

89015747492 has 54 divisors (see below), whose sum is σ = 181656942642. Its totient is φ = 38055849216.

The previous prime is 89015747477. The next prime is 89015747519. The reversal of 89015747492 is 29474751098.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4046995456 + 84968752036 = 63616^2 + 291494^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 74614448 + ... + 74615640.

Almost surely, 289015747492 is an apocalyptic number.

It is an amenable number.

89015747492 is an abundant number, since it is smaller than the sum of its proper divisors (92641195150).

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

89015747492 is a wasteful number, since it uses less digits than its factorization.

89015747492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 89015747492 in words is "eighty-nine billion, fifteen million, seven hundred forty-seven thousand, four hundred ninety-two".

Divisors: 1 2 4 7 14 28 49 98 196 617 1193 1234 2386 2468 4319 4772 8351 8638 16702 17276 30233 33404 58457 60466 116914 120932 233828 380689 736081 761378 1472162 1522756 2664823 2944324 5152567 5329646 10305134 10659292 18653761 20610268 36067969 37307522 72135938 74615044 144271876 454161977 908323954 1816647908 3179133839 6358267678 12716535356 22253936873 44507873746 89015747492