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23169042 = 2321399013
BaseRepresentation
bin101100001100…
…0100000010010
31121121002221200
41120120200102
521412402132
62144332030
7400635141
oct130304022
947532850
1023169042
1112095276
127914016
134a529c0
143111758
152079d7c
hex1618812

23169042 has 24 divisors (see below), whose sum is σ = 54061644. Its totient is φ = 7128864.

The previous prime is 23169001. The next prime is 23169043. The reversal of 23169042 is 24096132.

It can be written as a sum of positive squares in 2 ways, for example, as 16088121 + 7080921 = 4011^2 + 2661^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23168997 and 23169015.

It is not an unprimeable number, because it can be changed into a prime (23169043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49273 + ... + 49740.

Almost surely, 223169042 is an apocalyptic number.

23169042 is an abundant number, since it is smaller than the sum of its proper divisors (30892602).

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

23169042 is a wasteful number, since it uses less digits than its factorization.

23169042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99034 (or 99031 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 23169042 is about 4813.4231062727. The cubic root of 23169042 is about 285.0817124887.

The spelling of 23169042 in words is "twenty-three million, one hundred sixty-nine thousand, forty-two".

Divisors: 1 2 3 6 9 13 18 26 39 78 117 234 99013 198026 297039 594078 891117 1287169 1782234 2574338 3861507 7723014 11584521 23169042