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212395029 = 37118910331
BaseRepresentation
bin11001010100011…
…10010000010101
3112210122210012120
430222032100111
5413333120104
633024210153
75156220330
oct1452162025
9483583176
10212395029
11a9989590
125b169959
1335007042
14202cb617
15139a6cd9
hexca8e415

212395029 has 32 divisors (see below), whose sum is σ = 357073920. Its totient is φ = 109084800.

The previous prime is 212395003. The next prime is 212395037. The reversal of 212395029 is 920593212.

It is not a de Polignac number, because 212395029 - 25 = 212394997 is a prime.

It is a super-2 number, since 2×2123950292 = 90223296687821682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212395049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15394 + ... + 25724.

It is an arithmetic number, because the mean of its divisors is an integer number (11158560).

Almost surely, 2212395029 is an apocalyptic number.

It is an amenable number.

212395029 is a deficient number, since it is larger than the sum of its proper divisors (144678891).

212395029 is a wasteful number, since it uses less digits than its factorization.

212395029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10441.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 212395029 is about 14573.7788167654. The cubic root of 212395029 is about 596.6433200745.

The spelling of 212395029 in words is "two hundred twelve million, three hundred ninety-five thousand, twenty-nine".

Divisors: 1 3 7 11 21 33 77 89 231 267 623 979 1869 2937 6853 10331 20559 30993 72317 113641 216951 340923 795487 919459 2386461 2758377 6436213 10114049 19308639 30342147 70798343 212395029