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23144170 = 2572149317
BaseRepresentation
bin101100001001…
…0011011101010
31121112211211111
41120102123222
521411103140
62144020534
7400502500
oct130223352
947484744
1023144170
1112078615
12790174a
134a4459a
143106670
1520727ea
hex16126ea

23144170 has 48 divisors (see below), whose sum is σ = 48940200. Its totient is φ = 7857024.

The previous prime is 23144167. The next prime is 23144171. The reversal of 23144170 is 7144132.

It can be written as a sum of positive squares in 4 ways, for example, as 7722841 + 15421329 = 2779^2 + 3927^2 .

It is not an unprimeable number, because it can be changed into a prime (23144171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72852 + ... + 73168.

Almost surely, 223144170 is an apocalyptic number.

23144170 is an abundant number, since it is smaller than the sum of its proper divisors (25796030).

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

23144170 is a wasteful number, since it uses less digits than its factorization.

23144170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 23144170 is about 4810.8388042004. The cubic root of 23144170 is about 284.9796640871.

The spelling of 23144170 in words is "twenty-three million, one hundred forty-four thousand, one hundred seventy".

Divisors: 1 2 5 7 10 14 35 49 70 98 149 245 298 317 490 634 745 1043 1490 1585 2086 2219 3170 4438 5215 7301 10430 11095 14602 15533 22190 31066 36505 47233 73010 77665 94466 155330 236165 330631 472330 661262 1653155 2314417 3306310 4628834 11572085 23144170