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68722824 = 23310128351
BaseRepresentation
bin1000001100010…
…10000010001000
311210022110222210
410012022002020
5120043112244
610452545120
71463064042
oct406120210
9153273883
1068722824
1135879525
121b0221a0
13113123c1
1491aca92
1560774b9
hex418a088

68722824 has 32 divisors (see below), whose sum is σ = 173514240. Its totient is φ = 22680000.

The previous prime is 68722813. The next prime is 68722831. The reversal of 68722824 is 42822786.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11752 + ... + 16599.

It is an arithmetic number, because the mean of its divisors is an integer number (5422320).

Almost surely, 268722824 is an apocalyptic number.

It is an amenable number.

68722824 is an abundant number, since it is smaller than the sum of its proper divisors (104791416).

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

68722824 is a wasteful number, since it uses less digits than its factorization.

68722824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28461 (or 28457 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 68722824 is about 8289.9230394498. The cubic root of 68722824 is about 409.6066503081.

The spelling of 68722824 in words is "sixty-eight million, seven hundred twenty-two thousand, eight hundred twenty-four".

Divisors: 1 2 3 4 6 8 12 24 101 202 303 404 606 808 1212 2424 28351 56702 85053 113404 170106 226808 340212 680424 2863451 5726902 8590353 11453804 17180706 22907608 34361412 68722824