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68886132 = 2237820073
BaseRepresentation
bin1000001101100…
…01111001110100
311210121210000020
410012301321310
5120113324012
610500245140
71464344130
oct406617164
9153553006
1068886132
1135980197
121b0a07b0
131136b833
1492123c0
1560aaa8c
hex41b1e74

68886132 has 24 divisors (see below), whose sum is σ = 183696576. Its totient is φ = 19681728.

The previous prime is 68886131. The next prime is 68886137. The reversal of 68886132 is 23168886.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68886131) 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, 409953 + ... + 410120.

It is an arithmetic number, because the mean of its divisors is an integer number (7654024).

Almost surely, 268886132 is an apocalyptic number.

It is an amenable number.

68886132 is an abundant number, since it is smaller than the sum of its proper divisors (114810444).

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

68886132 is a wasteful number, since it uses less digits than its factorization.

68886132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820087 (or 820085 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 68886132 is about 8299.7669846810. The cubic root of 68886132 is about 409.9308469528.

The spelling of 68886132 in words is "sixty-eight million, eight hundred eighty-six thousand, one hundred thirty-two".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 820073 1640146 2460219 3280292 4920438 5740511 9840876 11481022 17221533 22962044 34443066 68886132