Base | Representation |
---|---|
bin | 1001000110100… |
… | …1010010111001 |
3 | 2122211202011000 |
4 | 2101221102321 |
5 | 34233230100 |
6 | 3442155213 |
7 | 642345012 |
oct | 221512271 |
9 | 78752130 |
10 | 38180025 |
11 | 1a608244 |
12 | 10952b09 |
13 | 7baa340 |
14 | 50dc009 |
15 | 3542900 |
hex | 24694b9 |
38180025 has 96 divisors (see below), whose sum is σ = 79856000. Its totient is φ = 17729280.
The previous prime is 38179997. The next prime is 38180029. The reversal of 38180025 is 52008183.
It is a happy number.
It is not a de Polignac number, because 38180025 - 211 = 38177977 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (38180029) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 166611 + ... + 166839.
Almost surely, 238180025 is an apocalyptic number.
It is an amenable number.
38180025 is an abundant number, since it is smaller than the sum of its proper divisors (41675975).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
38180025 is a wasteful number, since it uses less digits than its factorization.
38180025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 280 (or 269 counting only the distinct ones).
The product of its (nonzero) digits is 1920, while the sum is 27.
The square root of 38180025 is about 6178.9987052920. The cubic root of 38180025 is about 336.7276164308.
The spelling of 38180025 in words is "thirty-eight million, one hundred eighty thousand, twenty-five".
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