Base | Representation |
---|---|
bin | 11100100010101101… |
… | …110100110001001000 |
3 | 2221002212010112021000 |
4 | 130202231310301020 |
5 | 1000231141142112 |
6 | 22025032015000 |
7 | 2133315656436 |
oct | 344255646110 |
9 | 87085115230 |
10 | 30647209032 |
11 | 11aa7606830 |
12 | 5b33831460 |
13 | 2b754ac91b |
14 | 16aa39dd56 |
15 | be586e7dc |
hex | 722b74c48 |
30647209032 has 64 divisors (see below), whose sum is σ = 92870337600. Its totient is φ = 9287032320.
The previous prime is 30647209009. The next prime is 30647209037. The reversal of 30647209032 is 23090274603.
It is a happy number.
30647209032 is a `hidden beast` number, since 3 + 0 + 647 + 2 + 0 + 9 + 0 + 3 + 2 = 666.
It is a super-2 number, since 2×306472090322 (a number of 22 digits) contains 22 as substring.
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 (30647209037) 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, 6446953 + ... + 6451704.
It is an arithmetic number, because the mean of its divisors is an integer number (1451099025).
Almost surely, 230647209032 is an apocalyptic number.
It is an amenable number.
30647209032 is an abundant number, since it is smaller than the sum of its proper divisors (62223128568).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30647209032 is a wasteful number, since it uses less digits than its factorization.
30647209032 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 12898683 (or 12898673 counting only the distinct ones).
The product of its (nonzero) digits is 54432, while the sum is 36.
The spelling of 30647209032 in words is "thirty billion, six hundred forty-seven million, two hundred nine thousand, thirty-two".
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