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149056668 = 223216992437
BaseRepresentation
bin10001110001001…
…10110010011100
3101101110212022100
420320212302130
5301124303133
622442445100
73456650355
oct1070466234
9341425270
10149056668
1177158532
1241b03790
1324b5b717
1415b20d2c
15d144e13
hex8e26c9c

149056668 has 36 divisors (see below), whose sum is σ = 377158600. Its totient is φ = 49635936.

The previous prime is 149056667. The next prime is 149056673. The reversal of 149056668 is 866650941.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149056667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59946 + ... + 62382.

Almost surely, 2149056668 is an apocalyptic number.

149056668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

149056668 is an abundant number, since it is smaller than the sum of its proper divisors (228101932).

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

149056668 is a wasteful number, since it uses less digits than its factorization.

149056668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4146 (or 4141 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 149056668 is about 12208.8766067972. The cubic root of 149056668 is about 530.2131194644.

The spelling of 149056668 in words is "one hundred forty-nine million, fifty-six thousand, six hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 1699 2437 3398 4874 5097 6796 7311 9748 10194 14622 15291 20388 21933 29244 30582 43866 61164 87732 4140463 8280926 12421389 16561852 24842778 37264167 49685556 74528334 149056668