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20379710 = 2513231389
BaseRepresentation
bin100110110111…
…1100000111110
31102100101201002
41031233200332
520204122320
62004450302
7335140031
oct115574076
942311632
1020379710
111055a63a
1269a9992
1342b7200
1429c7018
151bc8675
hex136f83e

20379710 has 48 divisors (see below), whose sum is σ = 41109120. Its totient is φ = 7263360.

The previous prime is 20379703. The next prime is 20379713. The reversal of 20379710 is 1797302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20379713) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52196 + ... + 52584.

It is an arithmetic number, because the mean of its divisors is an integer number (856440).

Almost surely, 220379710 is an apocalyptic number.

20379710 is an abundant number, since it is smaller than the sum of its proper divisors (20729410).

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

20379710 is a wasteful number, since it uses less digits than its factorization.

20379710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 20379710 is about 4514.3892167158. The cubic root of 20379710 is about 273.1488228622.

The spelling of 20379710 in words is "twenty million, three hundred seventy-nine thousand, seven hundred ten".

Divisors: 1 2 5 10 13 26 31 62 65 130 155 169 310 338 389 403 778 806 845 1690 1945 2015 3890 4030 5057 5239 10114 10478 12059 24118 25285 26195 50570 52390 60295 65741 120590 131482 156767 313534 328705 657410 783835 1567670 2037971 4075942 10189855 20379710