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68427408 = 2437203653
BaseRepresentation
bin1000001010000…
…01111010010000
311202202110202110
410011001322100
5120004134113
610442345320
71460423550
oct405017220
9152673673
1068427408
1135697585
121aabb240
131123aaba
149133160
156019bc3
hex4141e90

68427408 has 40 divisors (see below), whose sum is σ = 202024768. Its totient is φ = 19550592.

The previous prime is 68427407. The next prime is 68427409. The reversal of 68427408 is 80472486.

It is an interprime number because it is at equal distance from previous prime (68427407) and next prime (68427409).

It is not an unprimeable number, because it can be changed into a prime (68427407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101491 + ... + 102162.

Almost surely, 268427408 is an apocalyptic number.

It is an amenable number.

68427408 is an abundant number, since it is smaller than the sum of its proper divisors (133597360).

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

68427408 is a wasteful number, since it uses less digits than its factorization.

68427408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203671 (or 203665 counting only the distinct ones).

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

The square root of 68427408 is about 8272.0860730532. The cubic root of 68427408 is about 409.0188875052.

The spelling of 68427408 in words is "sixty-eight million, four hundred twenty-seven thousand, four hundred eight".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 56 84 112 168 336 203653 407306 610959 814612 1221918 1425571 1629224 2443836 2851142 3258448 4276713 4887672 5702284 8553426 9775344 11404568 17106852 22809136 34213704 68427408