Base | Representation |
---|---|
bin | 1110100111001… |
… | …0001010101110 |
3 | 11021022121021020 |
4 | 3221302022232 |
5 | 111142110123 |
6 | 10025315010 |
7 | 1342625403 |
oct | 351621256 |
9 | 137277236 |
10 | 61285038 |
11 | 316593a1 |
12 | 18635a66 |
13 | c909b49 |
14 | 81d42aa |
15 | 55a87e3 |
hex | 3a722ae |
61285038 has 16 divisors (see below), whose sum is σ = 122967936. Its totient is φ = 20362040.
The previous prime is 61285031. The next prime is 61285043. The reversal of 61285038 is 83058216.
It is a happy number.
It is a super-3 number, since 3×612850383 (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (61285031) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14556 + ... + 18287.
It is an arithmetic number, because the mean of its divisors is an integer number (7685496).
Almost surely, 261285038 is an apocalyptic number.
61285038 is an abundant number, since it is smaller than the sum of its proper divisors (61682898).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
61285038 is a wasteful number, since it uses less digits than its factorization.
61285038 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 33159.
The product of its (nonzero) digits is 11520, while the sum is 33.
The square root of 61285038 is about 7828.4760969169. The cubic root of 61285038 is about 394.2619085381.
The spelling of 61285038 in words is "sixty-one million, two hundred eighty-five thousand, thirty-eight".
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