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380827215 = 32523367949
BaseRepresentation
bin10110101100101…
…111011001001111
3222112121000201200
4112230233121033
51234442432330
6101442240543
712302656266
oct2654573117
9875530650
10380827215
11185a7013a
12a7656153
1360b8a862
14388135dd
1523677a60
hex16b2f64f

380827215 has 24 divisors (see below), whose sum is σ = 688802400. Its totient is φ = 194276544.

The previous prime is 380827211. The next prime is 380827247. The reversal of 380827215 is 512728083.

380827215 is a `hidden beast` number, since 380 + 8 + 272 + 1 + 5 = 666.

It is not a de Polignac number, because 380827215 - 22 = 380827211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 380827215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380827211) 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, 182940 + ... + 185009.

It is an arithmetic number, because the mean of its divisors is an integer number (28700100).

Almost surely, 2380827215 is an apocalyptic number.

380827215 is a deficient number, since it is larger than the sum of its proper divisors (307975185).

380827215 is a wasteful number, since it uses less digits than its factorization.

380827215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367983 (or 367980 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 380827215 is about 19514.7947721722. The cubic root of 380827215 is about 724.8408465552.

The spelling of 380827215 in words is "three hundred eighty million, eight hundred twenty-seven thousand, two hundred fifteen".

Divisors: 1 3 5 9 15 23 45 69 115 207 345 1035 367949 1103847 1839745 3311541 5519235 8462827 16557705 25388481 42314135 76165443 126942405 380827215