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380506293 = 32192225183
BaseRepresentation
bin10110101011100…
…001000010110101
3222111222201111200
4112223201002311
51234402200133
6101431323113
712300151536
oct2653410265
9874881450
10380506293
11185871012
12a7520499
1360aa776b
143876c68d
1523612913
hex16ae10b5

380506293 has 12 divisors (see below), whose sum is σ = 578547840. Its totient is φ = 240319656.

The previous prime is 380506283. The next prime is 380506297. The reversal of 380506293 is 392605083.

It is not a de Polignac number, because 380506293 - 24 = 380506277 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380506297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1112421 + ... + 1112762.

It is an arithmetic number, because the mean of its divisors is an integer number (48212320).

Almost surely, 2380506293 is an apocalyptic number.

It is an amenable number.

380506293 is a deficient number, since it is larger than the sum of its proper divisors (198041547).

380506293 is a wasteful number, since it uses less digits than its factorization.

380506293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225208 (or 2225205 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 380506293 is about 19506.5705084210. The cubic root of 380506293 is about 724.6371822357.

The spelling of 380506293 in words is "three hundred eighty million, five hundred six thousand, two hundred ninety-three".

Divisors: 1 3 9 19 57 171 2225183 6675549 20026647 42278477 126835431 380506293