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380439388 = 22713587121
BaseRepresentation
bin10110101011010…
…000101101011100
3222111212022201201
4112223100231130
51234343030023
6101430045244
712266452510
oct2653205534
9874768651
10380439388
1118582581a
12a74a9824
1360a83184
1438752140
15235ecbad
hex16ad0b5c

380439388 has 12 divisors (see below), whose sum is σ = 760878832. Its totient is φ = 163045440.

The previous prime is 380439373. The next prime is 380439391. The reversal of 380439388 is 883934083.

380439388 is an admirable number.

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, 6793533 + ... + 6793588.

Almost surely, 2380439388 is an apocalyptic number.

It is an amenable number.

380439388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

380439388 is a wasteful number, since it uses less digits than its factorization.

380439388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13587132 (or 13587130 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 380439388 is about 19504.8554980548. The cubic root of 380439388 is about 724.5947083937.

The spelling of 380439388 in words is "three hundred eighty million, four hundred thirty-nine thousand, three hundred eighty-eight".

Divisors: 1 2 4 7 14 28 13587121 27174242 54348484 95109847 190219694 380439388