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212540952 = 23313681221
BaseRepresentation
bin11001010101100…
…01111000011000
3112210221012101010
430222301320120
5413402302302
633031253520
75160365631
oct1452617030
9483835333
10212540952
11a9a79188
125b21a2a0
13350585a0
1420328888
15139d516c
hexcab1e18

212540952 has 32 divisors (see below), whose sum is σ = 572226480. Its totient is φ = 65397120.

The previous prime is 212540941. The next prime is 212540963. The reversal of 212540952 is 259045212.

It is an interprime number because it is at equal distance from previous prime (212540941) and next prime (212540963).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340299 + ... + 340922.

Almost surely, 2212540952 is an apocalyptic number.

It is an amenable number.

212540952 is an abundant number, since it is smaller than the sum of its proper divisors (359685528).

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

212540952 is a wasteful number, since it uses less digits than its factorization.

212540952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681243 (or 681239 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 212540952 is about 14578.7843114575. The cubic root of 212540952 is about 596.7799272455.

The spelling of 212540952 in words is "two hundred twelve million, five hundred forty thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 681221 1362442 2043663 2724884 4087326 5449768 8174652 8855873 16349304 17711746 26567619 35423492 53135238 70846984 106270476 212540952