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68658132 = 22322325657
BaseRepresentation
bin1000001011110…
…10001111010100
311210012012020210
410011322033110
5120034030012
610451325420
71462404324
oct405721724
9153165223
1068658132
1135834964
121abb0870
13112bbb1a
149193284
15606323c
hex417a3d4

68658132 has 24 divisors (see below), whose sum is σ = 160926976. Its totient is φ = 22782528.

The previous prime is 68658131. The next prime is 68658137. The reversal of 68658132 is 23185686.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68658131) by changing a digit.

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, 10153 + ... + 15504.

Almost surely, 268658132 is an apocalyptic number.

It is an amenable number.

68658132 is an abundant number, since it is smaller than the sum of its proper divisors (92268844).

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

68658132 is a wasteful number, since it uses less digits than its factorization.

68658132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25887 (or 25885 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 68658132 is about 8286.0202751381. The cubic root of 68658132 is about 409.4780826750.

The spelling of 68658132 in words is "sixty-eight million, six hundred fifty-eight thousand, one hundred thirty-two".

Divisors: 1 2 3 4 6 12 223 446 669 892 1338 2676 25657 51314 76971 102628 153942 307884 5721511 11443022 17164533 22886044 34329066 68658132