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28160338 = 231454199
BaseRepresentation
bin110101101101…
…1000101010010
31221222200201111
41223123011102
524202112323
62443323534
7461234053
oct153330522
957880644
1028160338
1114994308
1295205aa
135aac82b
143a5072a
152713c0d
hex1adb152

28160338 has 8 divisors (see below), whose sum is σ = 43603200. Its totient is φ = 13625940.

The previous prime is 28160329. The next prime is 28160351. The reversal of 28160338 is 83306182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 227038 + ... + 227161.

It is an arithmetic number, because the mean of its divisors is an integer number (5450400).

Almost surely, 228160338 is an apocalyptic number.

28160338 is a deficient number, since it is larger than the sum of its proper divisors (15442862).

28160338 is a wasteful number, since it uses less digits than its factorization.

28160338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454232.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 28160338 is about 5306.6315116088. The cubic root of 28160338 is about 304.2374140889.

The spelling of 28160338 in words is "twenty-eight million, one hundred sixty thousand, three hundred thirty-eight".

Divisors: 1 2 31 62 454199 908398 14080169 28160338