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232749985 = 51359137443
BaseRepresentation
bin11011101111101…
…11101110100001
3121012221220221211
431313313232201
5434040444420
635032350121
75524225246
oct1567675641
9535856854
10232749985
1110a421566
1265b45341
13392b2bb0
1422ca95cd
1515677e5a
hexddf7ba1

232749985 has 32 divisors (see below), whose sum is σ = 308810880. Its totient is φ = 167351808.

The previous prime is 232749983. The next prime is 232749997. The reversal of 232749985 is 589947232.

It is not a de Polignac number, because 232749985 - 21 = 232749983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (232749983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 525174 + ... + 525616.

It is an arithmetic number, because the mean of its divisors is an integer number (9650340).

Almost surely, 2232749985 is an apocalyptic number.

It is an amenable number.

232749985 is a deficient number, since it is larger than the sum of its proper divisors (76060895).

232749985 is a wasteful number, since it uses less digits than its factorization.

232749985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657.

The product of its digits is 1088640, while the sum is 49.

The square root of 232749985 is about 15256.1458107872. The cubic root of 232749985 is about 615.1247769385.

The spelling of 232749985 in words is "two hundred thirty-two million, seven hundred forty-nine thousand, nine hundred eighty-five".

Divisors: 1 5 13 59 65 137 295 443 685 767 1781 2215 3835 5759 8083 8905 26137 28795 40415 60691 105079 130685 303455 339781 525395 788983 1698905 3580769 3944915 17903845 46549997 232749985