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89968838648 = 23132139478741
BaseRepresentation
bin101001111001010001…
…1111000011111111000
322121020002020112210012
41103302203320133320
52433224010314043
6105155304241052
76333340340063
oct1236243703770
9277202215705
1089968838648
1135179078107
121552a470188
13863a531800
1444d6b098da
152518773a18
hex14f28f87f8

89968838648 has 48 divisors (see below), whose sum is σ = 183980550600. Its totient is φ = 41225258880.

The previous prime is 89968838647. The next prime is 89968838699. The reversal of 89968838648 is 84683886998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89968838647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51443 + ... + 427298.

Almost surely, 289968838648 is an apocalyptic number.

It is an amenable number.

89968838648 is an abundant number, since it is smaller than the sum of its proper divisors (94011711952).

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

89968838648 is a wasteful number, since it uses less digits than its factorization.

89968838648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478912 (or 478895 counting only the distinct ones).

The product of its digits is 1146617856, while the sum is 77.

The spelling of 89968838648 in words is "eighty-nine billion, nine hundred sixty-eight million, eight hundred thirty-eight thousand, six hundred forty-eight".

Divisors: 1 2 4 8 13 26 52 104 139 169 278 338 556 676 1112 1352 1807 3614 7228 14456 23491 46982 93964 187928 478741 957482 1914964 3829928 6223633 12447266 24894532 49789064 66544999 80907229 133089998 161814458 266179996 323628916 532359992 647257832 865084987 1730169974 3460339948 6920679896 11246104831 22492209662 44984419324 89968838648