Base | Representation |
---|---|
bin | 11100110110100100… |
… | …011100100011100000 |
3 | 2221222001220001010220 |
4 | 130312210130203200 |
5 | 1001421423414010 |
6 | 22122051123040 |
7 | 2144502106263 |
oct | 346644344340 |
9 | 87861801126 |
10 | 30980294880 |
11 | 12158629097 |
12 | 60072a3480 |
13 | 2bc94c3142 |
14 | 16dc706cda |
15 | c14c16970 |
hex | 73691c8e0 |
30980294880 has 48 divisors (see below), whose sum is σ = 97587930384. Its totient is φ = 8261411840.
The previous prime is 30980294861. The next prime is 30980294897. The reversal of 30980294880 is 8849208903.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (48).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32270661 + ... + 32271620.
It is an arithmetic number, because the mean of its divisors is an integer number (2033081883).
Almost surely, 230980294880 is an apocalyptic number.
30980294880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is an amenable number.
30980294880 is an abundant number, since it is smaller than the sum of its proper divisors (66607635504).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30980294880 is a wasteful number, since it uses less digits than its factorization.
30980294880 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 64542299 (or 64542291 counting only the distinct ones).
The product of its (nonzero) digits is 995328, while the sum is 51.
The spelling of 30980294880 in words is "thirty billion, nine hundred eighty million, two hundred ninety-four thousand, eight hundred eighty".
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