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380490308 = 221147389
BaseRepresentation
bin10110101011011…
…101001001000100
3222111221220120122
4112223131021010
51234401142213
6101431121112
712300054122
oct2653351104
9874856518
10380490308
11185860000
12a7513198
1360aa03c3
1438766912
152360cd08
hex16add244

380490308 has 60 divisors (see below), whose sum is σ = 750815100. Its totient is φ = 168664320.

The previous prime is 380490301. The next prime is 380490337. The reversal of 380490308 is 803094083.

It can be written as a sum of positive squares in 2 ways, for example, as 140612164 + 239878144 = 11858^2 + 15488^2 .

It is not an unprimeable number, because it can be changed into a prime (380490301) 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, 4275128 + ... + 4275216.

It is an arithmetic number, because the mean of its divisors is an integer number (12513585).

Almost surely, 2380490308 is an apocalyptic number.

It is an amenable number.

380490308 is a deficient number, since it is larger than the sum of its proper divisors (370324792).

380490308 is an equidigital number, since it uses as much as digits as its factorization.

380490308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 380490308 is about 19506.1607703823. The cubic root of 380490308 is about 724.6270348016.

The spelling of 380490308 in words is "three hundred eighty million, four hundred ninety thousand, three hundred eight".

Divisors: 1 2 4 11 22 44 73 89 121 146 178 242 292 356 484 803 979 1331 1606 1958 2662 3212 3916 5324 6497 8833 10769 12994 14641 17666 21538 25988 29282 35332 43076 58564 71467 97163 118459 142934 194326 236918 285868 388652 473836 786137 1068793 1303049 1572274 2137586 2606098 3144548 4275172 5212196 8647507 17295014 34590028 95122577 190245154 380490308