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9999997630 = 257162188129
BaseRepresentation
bin10010101000000101…
…11101101010111110
3221210220202111212121
421110002331222332
5130434444411010
64332142353154
7502544402020
oct112402755276
927726674777
109999997630
114271813257
121b30b8b7ba
13c349b937c
146ac162010
153d7dac3da
hex2540bdabe

9999997630 has 32 divisors (see below), whose sum is σ = 20584347840. Its totient is φ = 3426416640.

The previous prime is 9999997619. The next prime is 9999997649. The reversal of 9999997630 is 367999999.

It is a Harshad number since it is a multiple of its sum of digits (70).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9999997630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69406 + ... + 157534.

It is an arithmetic number, because the mean of its divisors is an integer number (643260870).

Almost surely, 29999997630 is an apocalyptic number.

9999997630 is an abundant number, since it is smaller than the sum of its proper divisors (10584350210).

9999997630 is a wasteful number, since it uses less digits than its factorization.

9999997630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89764.

The product of its (nonzero) digits is 66961566, while the sum is 70.

The square root of 9999997630 is about 99999.9881499993. The cubic root of 9999997630 is about 2154.4345198315.

The spelling of 9999997630 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety-seven thousand, six hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 1621 3242 8105 11347 16210 22694 56735 88129 113470 176258 440645 616903 881290 1233806 3084515 6169030 142857109 285714218 714285545 999999763 1428571090 1999999526 4999998815 9999997630