Base | Representation |
---|---|
bin | 1000000101110111… |
… | …0010101011011100 |
3 | 12121101010121202000 |
4 | 2001131302223130 |
5 | 13422022224440 |
6 | 555311002300 |
7 | 104553203256 |
oct | 20135625334 |
9 | 5541117660 |
10 | 2172070620 |
11 | a15093895 |
12 | 507509390 |
13 | 288002cb5 |
14 | 16868acd6 |
15 | caa51730 |
hex | 81772adc |
2172070620 has 96 divisors (see below), whose sum is σ = 7155086400. Its totient is φ = 545144832.
The previous prime is 2172070609. The next prime is 2172070627. The reversal of 2172070620 is 260702712.
2172070620 is a `hidden beast` number, since 2 + 17 + 20 + 7 + 0 + 620 = 666.
2172070620 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2172070627) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109125 + ... + 127484.
It is an arithmetic number, because the mean of its divisors is an integer number (74532150).
Almost surely, 22172070620 is an apocalyptic number.
2172070620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
2172070620 is an abundant number, since it is smaller than the sum of its proper divisors (4983015780).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2172070620 is a wasteful number, since it uses less digits than its factorization.
2172070620 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 236644 (or 236636 counting only the distinct ones).
The product of its (nonzero) digits is 2352, while the sum is 27.
The square root of 2172070620 is about 46605.4784333344. The cubic root of 2172070620 is about 1295.0642465008.
The spelling of 2172070620 in words is "two billion, one hundred seventy-two million, seventy thousand, six hundred twenty".
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