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380918382 = 23134883569
BaseRepresentation
bin10110101101000…
…101101001101110
3222112202122210020
4112231011221232
51240003342012
6101444223010
712303516135
oct2655055156
9875678706
10380918382
11186022689
12a769aa66
1360bc01c0
143883891c
1523694a8c
hex16b45a6e

380918382 has 16 divisors (see below), whose sum is σ = 820439760. Its totient is φ = 117205632.

The previous prime is 380918323. The next prime is 380918389. The reversal of 380918382 is 283819083.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380918389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2441707 + ... + 2441862.

It is an arithmetic number, because the mean of its divisors is an integer number (51277485).

Almost surely, 2380918382 is an apocalyptic number.

380918382 is an abundant number, since it is smaller than the sum of its proper divisors (439521378).

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

380918382 is a wasteful number, since it uses less digits than its factorization.

380918382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4883587.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 380918382 is about 19517.1304755592. The cubic root of 380918382 is about 724.8986823141.

The spelling of 380918382 in words is "three hundred eighty million, nine hundred eighteen thousand, three hundred eighty-two".

Divisors: 1 2 3 6 13 26 39 78 4883569 9767138 14650707 29301414 63486397 126972794 190459191 380918382