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3138933 = 37197867
BaseRepresentation
bin1011111110010101110101
312220110210210
423332111311
51300421213
6151140033
735452260
oct13762565
95813723
103138933
111854366
121074619
1385b975
145b9cd7
154200c3
hex2fe575

3138933 has 16 divisors (see below), whose sum is σ = 5035520. Its totient is φ = 1699056.

The previous prime is 3138929. The next prime is 3138943. The reversal of 3138933 is 3398313.

It is not a de Polignac number, because 3138933 - 22 = 3138929 is a prime.

It is a Curzon number.

3138933 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3138933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3535 + ... + 4332.

It is an arithmetic number, because the mean of its divisors is an integer number (314720).

Almost surely, 23138933 is an apocalyptic number.

It is an amenable number.

3138933 is a deficient number, since it is larger than the sum of its proper divisors (1896587).

3138933 is a wasteful number, since it uses less digits than its factorization.

3138933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7896.

The product of its digits is 5832, while the sum is 30.

The square root of 3138933 is about 1771.7034176182. The cubic root of 3138933 is about 146.4178465956.

The spelling of 3138933 in words is "three million, one hundred thirty-eight thousand, nine hundred thirty-three".

Divisors: 1 3 7 19 21 57 133 399 7867 23601 55069 149473 165207 448419 1046311 3138933