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68917488 = 2439071583
BaseRepresentation
bin1000001101110…
…01100011110000
311210200101000120
410012321203300
5120120324423
610501050240
71464534423
oct406714360
9153611016
1068917488
11359a1802
121b0b6980
131137cba3
14921d9ba
1560b4ee3
hex41b98f0

68917488 has 40 divisors (see below), whose sum is σ = 178345728. Its totient is φ = 22932672.

The previous prime is 68917477. The next prime is 68917489. The reversal of 68917488 is 88471986.

It is a self number, because there is not a number n which added to its sum of digits gives 68917488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68917489) 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, 42745 + ... + 44327.

Almost surely, 268917488 is an apocalyptic number.

It is an amenable number.

68917488 is an abundant number, since it is smaller than the sum of its proper divisors (109428240).

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

68917488 is a wasteful number, since it uses less digits than its factorization.

68917488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501 (or 2495 counting only the distinct ones).

The product of its digits is 774144, while the sum is 51.

The square root of 68917488 is about 8301.6557384657. The cubic root of 68917488 is about 409.9930357730.

The spelling of 68917488 in words is "sixty-eight million, nine hundred seventeen thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 48 907 1583 1814 2721 3166 3628 4749 5442 6332 7256 9498 10884 12664 14512 18996 21768 25328 37992 43536 75984 1435781 2871562 4307343 5743124 8614686 11486248 17229372 22972496 34458744 68917488