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28950174 = 23211146213
BaseRepresentation
bin110111001101…
…1111010011110
32000110211011200
41232123322132
524402401144
62512300330
7501033561
oct156337236
960424150
1028950174
1115383770
1298416a6
135cc81a6
143bb84d8
15281cc69
hex1b9be9e

28950174 has 24 divisors (see below), whose sum is σ = 68428152. Its totient is φ = 8772720.

The previous prime is 28950161. The next prime is 28950191. The reversal of 28950174 is 47105982.

28950174 is a `hidden beast` number, since 2 + 89 + 501 + 74 = 666.

It is a super-2 number, since 2×289501742 = 1676225149260552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72909 + ... + 73304.

It is an arithmetic number, because the mean of its divisors is an integer number (2851173).

Almost surely, 228950174 is an apocalyptic number.

28950174 is an abundant number, since it is smaller than the sum of its proper divisors (39477978).

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

28950174 is a wasteful number, since it uses less digits than its factorization.

28950174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146232 (or 146229 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 28950174 is about 5380.5365903412. The cubic root of 28950174 is about 307.0556262312.

The spelling of 28950174 in words is "twenty-eight million, nine hundred fifty thousand, one hundred seventy-four".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 198 146213 292426 438639 877278 1315917 1608343 2631834 3216686 4825029 9650058 14475087 28950174