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23942970 = 23251715649
BaseRepresentation
bin101101101010…
…1011100111010
31200001102120200
41123111130322
522112133340
62213103030
7410340402
oct133253472
950042520
1023942970
1112573787
128027a76
134c6404c
143273802
15217e330
hex16d573a

23942970 has 48 divisors (see below), whose sum is σ = 65917800. Its totient is φ = 6008832.

The previous prime is 23942969. The next prime is 23942981. The reversal of 23942970 is 7924932.

It can be written as a sum of positive squares in 4 ways, for example, as 18481401 + 5461569 = 4299^2 + 2337^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6295 + ... + 9354.

Almost surely, 223942970 is an apocalyptic number.

23942970 is an abundant number, since it is smaller than the sum of its proper divisors (41974830).

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

23942970 is a wasteful number, since it uses less digits than its factorization.

23942970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15679 (or 15676 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 23942970 is about 4893.1554236505. The cubic root of 23942970 is about 288.2212564804.

The spelling of 23942970 in words is "twenty-three million, nine hundred forty-two thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 17 18 30 34 45 51 85 90 102 153 170 255 306 510 765 1530 15649 31298 46947 78245 93894 140841 156490 234735 266033 281682 469470 532066 704205 798099 1330165 1408410 1596198 2394297 2660330 3990495 4788594 7980990 11971485 23942970