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38260681 = 112933889
BaseRepresentation
bin1001000111110…
…0111111001001
32122222211210021
42101330333021
534243320211
63444020441
7643132114
oct221747711
978884707
1038260681
111a6628a8
1210991721
137c07c74
14511d57b
15355b771
hex247cfc9

38260681 has 4 divisors (see below), whose sum is σ = 38295700. Its totient is φ = 38225664.

The previous prime is 38260643. The next prime is 38260709. The reversal of 38260681 is 18606283.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20620681 + 17640000 = 4541^2 + 4200^2 .

It is a cyclic number.

It is not a de Polignac number, because 38260681 - 215 = 38227913 is a prime.

It is a super-2 number, since 2×382606812 = 2927759421167522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38260631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15816 + ... + 18073.

It is an arithmetic number, because the mean of its divisors is an integer number (9573925).

Almost surely, 238260681 is an apocalyptic number.

It is an amenable number.

38260681 is a deficient number, since it is larger than the sum of its proper divisors (35019).

38260681 is a wasteful number, since it uses less digits than its factorization.

38260681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35018.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 38260681 is about 6185.5218858234. The cubic root of 38260681 is about 336.9645640698.

The spelling of 38260681 in words is "thirty-eight million, two hundred sixty thousand, six hundred eighty-one".

Divisors: 1 1129 33889 38260681