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8993157120 = 21232597503
BaseRepresentation
bin10000110000000100…
…01011000000000000
3212012202012201100100
420120002023000000
5121404222011440
64044214322400
7435600400653
oct103002130000
925182181310
108993157120
1138a5448062
1218ab959400
13b0422575c
1461455389a
153797c9230
hex21808b000

8993157120 has 312 divisors, whose sum is σ = 31556450016. Its totient is φ = 2368733184.

The previous prime is 8993157119. The next prime is 8993157163. The reversal of 8993157120 is 217513998.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17878789 + ... + 17879291.

It is an arithmetic number, because the mean of its divisors is an integer number (101142468).

Almost surely, 28993157120 is an apocalyptic number.

8993157120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8993157120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15778225008).

8993157120 is an abundant number, since it is smaller than the sum of its proper divisors (22563292896).

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

8993157120 is a wasteful number, since it uses less digits than its factorization.

8993157120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 8993157120 is about 94832.2578029227. The cubic root of 8993157120 is about 2079.5565129437.

The spelling of 8993157120 in words is "eight billion, nine hundred ninety-three million, one hundred fifty-seven thousand, one hundred twenty".