Base | Representation |
---|---|
bin | 1000000000111… |
… | …11101001011010 |
3 | 11200112001212110 |
4 | 10000133221122 |
5 | 114203112430 |
6 | 10401053150 |
7 | 1444342404 |
oct | 400375132 |
9 | 150461773 |
10 | 67238490 |
11 | 34a55300 |
12 | 1a6271b6 |
13 | 10c128b7 |
14 | 8d03b74 |
15 | 5d827b0 |
hex | 401fa5a |
67238490 has 48 divisors (see below), whose sum is σ = 177385824. Its totient is φ = 16299360.
The previous prime is 67238489. The next prime is 67238497. The reversal of 67238490 is 9483276.
It is not an unprimeable number, because it can be changed into a prime (67238497) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5632 + ... + 12891.
It is an arithmetic number, because the mean of its divisors is an integer number (3695538).
Almost surely, 267238490 is an apocalyptic number.
67238490 is an abundant number, since it is smaller than the sum of its proper divisors (110147334).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
67238490 is a wasteful number, since it uses less digits than its factorization.
67238490 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 18555 (or 18544 counting only the distinct ones).
The product of its (nonzero) digits is 72576, while the sum is 39.
The square root of 67238490 is about 8199.9079263123. The cubic root of 67238490 is about 406.6361491328.
The spelling of 67238490 in words is "sixty-seven million, two hundred thirty-eight thousand, four hundred ninety".
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