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28160154 = 23211142223
BaseRepresentation
bin110101101101…
…1000010011010
31221222200110200
41223123002122
524202111104
62443323030
7461233401
oct153330232
957880420
1028160154
1114994160
129520476
135aac719
143a50638
152713b39
hex1adb09a

28160154 has 24 divisors (see below), whose sum is σ = 66560832. Its totient is φ = 8533320.

The previous prime is 28160137. The next prime is 28160173. The reversal of 28160154 is 45106182.

28160154 is a `hidden beast` number, since 2 + 8 + 1 + 601 + 54 = 666.

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 11 ways as a sum of consecutive naturals, for example, 70914 + ... + 71309.

It is an arithmetic number, because the mean of its divisors is an integer number (2773368).

Almost surely, 228160154 is an apocalyptic number.

28160154 is an abundant number, since it is smaller than the sum of its proper divisors (38400678).

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

28160154 is a wasteful number, since it uses less digits than its factorization.

28160154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142242 (or 142239 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 28160154 is about 5306.6141747823. The cubic root of 28160154 is about 304.2367514571.

The spelling of 28160154 in words is "twenty-eight million, one hundred sixty thousand, one hundred fifty-four".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 198 142223 284446 426669 853338 1280007 1564453 2560014 3128906 4693359 9386718 14080077 28160154