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3139138 = 211031423
BaseRepresentation
bin1011111110011001000010
312220111002101
423332121002
51300423023
6151141014
735453002
oct13763102
95814071
103139138
111854532
12107476a
1385baa2
145ba002
154201ad
hex2fe642

3139138 has 8 divisors (see below), whose sum is σ = 4716288. Its totient is φ = 1567044.

The previous prime is 3139111. The next prime is 3139141. The reversal of 3139138 is 8319313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1495 + ... + 2917.

It is an arithmetic number, because the mean of its divisors is an integer number (589536).

Almost surely, 23139138 is an apocalyptic number.

3139138 is a deficient number, since it is larger than the sum of its proper divisors (1577150).

3139138 is a wasteful number, since it uses less digits than its factorization.

3139138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528.

The product of its digits is 1944, while the sum is 28.

The square root of 3139138 is about 1771.7612706005. The cubic root of 3139138 is about 146.4210339850.

The spelling of 3139138 in words is "three million, one hundred thirty-nine thousand, one hundred thirty-eight".

Divisors: 1 2 1103 1423 2206 2846 1569569 3139138