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3161380 = 225315099
BaseRepresentation
bin1100000011110100100100
312221121121011
430003310210
51302131010
6151432004
735604565
oct14036444
95847534
103161380
11186a212
121085604
13868c51
145c416c
15426a8a
hex303d24

3161380 has 24 divisors (see below), whose sum is σ = 6854400. Its totient is φ = 1223520.

The previous prime is 3161351. The next prime is 3161407. The reversal of 3161380 is 831613.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1930 + ... + 3169.

It is an arithmetic number, because the mean of its divisors is an integer number (285600).

Almost surely, 23161380 is an apocalyptic number.

It is an amenable number.

3161380 is an abundant number, since it is smaller than the sum of its proper divisors (3693020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3161380 is a wasteful number, since it uses less digits than its factorization.

3161380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5139 (or 5137 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 3161380 is about 1778.0269964205. The cubic root of 3161380 is about 146.7660368831.

Adding to 3161380 its reverse (831613), we get a palindrome (3992993).

The spelling of 3161380 in words is "three million, one hundred sixty-one thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 5099 10198 20396 25495 50990 101980 158069 316138 632276 790345 1580690 3161380