Base | Representation |
---|---|
bin | 111011001111110… |
… | …1111011000100000 |
3 | 12010112211111021000 |
4 | 1312133233120200 |
5 | 13032414011112 |
6 | 525134232000 |
7 | 100156664520 |
oct | 16637573040 |
9 | 5115744230 |
10 | 1988032032 |
11 | 930212988 |
12 | 475955600 |
13 | 258b46b1c |
14 | 14c061680 |
15 | b97eb7dc |
hex | 767ef620 |
1988032032 has 96 divisors (see below), whose sum is σ = 6626793600. Its totient is φ = 568007424.
The previous prime is 1988032031. The next prime is 1988032061. The reversal of 1988032032 is 2302308891.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (96).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is not an unprimeable number, because it can be changed into a prime (1988032031) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158307 + ... + 170402.
It is an arithmetic number, because the mean of its divisors is an integer number (69029100).
Almost surely, 21988032032 is an apocalyptic number.
1988032032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
1988032032 is an abundant number, since it is smaller than the sum of its proper divisors (4638761568).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1988032032 is a wasteful number, since it uses less digits than its factorization.
1988032032 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 328735 (or 328721 counting only the distinct ones).
The product of its (nonzero) digits is 20736, while the sum is 36.
The square root of 1988032032 is about 44587.3528256612. The cubic root of 1988032032 is about 1257.4029045471.
The spelling of 1988032032 in words is "one billion, nine hundred eighty-eight million, thirty-two thousand, thirty-two".
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