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380538810 = 2345469801
BaseRepresentation
bin10110101011101…
…000111110111010
3222112001101010000
4112223220332322
51234404220220
6101432133430
712300345411
oct2653507672
9875041100
10380538810
11185893493
12a7537276
1360ab94c2
143877a478
152361c390
hex16ae8fba

380538810 has 40 divisors (see below), whose sum is σ = 1023228756. Its totient is φ = 101476800.

The previous prime is 380538803. The next prime is 380538817. The reversal of 380538810 is 18835083.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (380538803) and next prime (380538817).

It can be written as a sum of positive squares in 2 ways, for example, as 350101521 + 30437289 = 18711^2 + 5517^2 .

It is a super-2 number, since 2×3805388102 = 289619571832432200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (380538817) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 234091 + ... + 235710.

Almost surely, 2380538810 is an apocalyptic number.

380538810 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

380538810 is an abundant number, since it is smaller than the sum of its proper divisors (642689946).

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

380538810 is a wasteful number, since it uses less digits than its factorization.

380538810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469820 (or 469811 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 380538810 is about 19507.4039790024. The cubic root of 380538810 is about 724.6578234677.

The spelling of 380538810 in words is "three hundred eighty million, five hundred thirty-eight thousand, eight hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 270 405 810 469801 939602 1409403 2349005 2818806 4228209 4698010 7047015 8456418 12684627 14094030 21141045 25369254 38053881 42282090 63423135 76107762 126846270 190269405 380538810