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168506284 = 2250818291
BaseRepresentation
bin10100000101100…
…11001110101100
3102202002000011111
422002303032230
5321114200114
624415401404
74114164652
oct1202631654
9382060144
10168506284
11871322a1
1248523264
1328bab47b
1418544dd2
15ebd7bc4
hexa0b33ac

168506284 has 12 divisors (see below), whose sum is σ = 294979608. Its totient is φ = 84226400.

The previous prime is 168506263. The next prime is 168506291. The reversal of 168506284 is 482605861.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16179 + ... + 24469.

It is an arithmetic number, because the mean of its divisors is an integer number (24581634).

Almost surely, 2168506284 is an apocalyptic number.

It is an amenable number.

168506284 is a deficient number, since it is larger than the sum of its proper divisors (126473324).

168506284 is a wasteful number, since it uses less digits than its factorization.

168506284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13376 (or 13374 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 168506284 is about 12980.9970341265. The cubic root of 168506284 is about 552.3385647933.

The spelling of 168506284 in words is "one hundred sixty-eight million, five hundred six thousand, two hundred eighty-four".

Divisors: 1 2 4 5081 8291 10162 16582 20324 33164 42126571 84253142 168506284