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381567664 = 2423847979
BaseRepresentation
bin10110101111100…
…100001010110000
3222120222122102201
4112233210022300
51240140131124
6101510152544
712312162112
oct2657441260
9876878381
10381567664
11186426485
12a7952754
13610898aa
14389673b2
1523772144
hex16be42b0

381567664 has 10 divisors (see below), whose sum is σ = 739287380. Its totient is φ = 190783824.

The previous prime is 381567661. The next prime is 381567679. The reversal of 381567664 is 466765183.

It is not an unprimeable number, because it can be changed into a prime (381567661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11923974 + ... + 11924005.

It is an arithmetic number, because the mean of its divisors is an integer number (73928738).

Almost surely, 2381567664 is an apocalyptic number.

It is an amenable number.

381567664 is a deficient number, since it is larger than the sum of its proper divisors (357719716).

381567664 is a wasteful number, since it uses less digits than its factorization.

381567664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23847987 (or 23847981 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 381567664 is about 19533.7570374979. The cubic root of 381567664 is about 725.3103159897.

The spelling of 381567664 in words is "three hundred eighty-one million, five hundred sixty-seven thousand, six hundred sixty-four".

Divisors: 1 2 4 8 16 23847979 47695958 95391916 190783832 381567664