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68903384 = 2311782993
BaseRepresentation
bin1000001101101…
…10000111011000
311210122122200012
410012312013120
5120114402014
610500501052
71464445334
oct406660730
9153578605
1068903384
1135992150
121b0aa788
1311376644
1492187c4
1560b0c3e
hex41b61d8

68903384 has 16 divisors (see below), whose sum is σ = 140938920. Its totient is φ = 31319680.

The previous prime is 68903381. The next prime is 68903413. The reversal of 68903384 is 48330986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68903381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391409 + ... + 391584.

Almost surely, 268903384 is an apocalyptic number.

It is an amenable number.

68903384 is an abundant number, since it is smaller than the sum of its proper divisors (72035536).

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

68903384 is a wasteful number, since it uses less digits than its factorization.

68903384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783010 (or 783006 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 68903384 is about 8300.8062259036. The cubic root of 68903384 is about 409.9650654351.

The spelling of 68903384 in words is "sixty-eight million, nine hundred three thousand, three hundred eighty-four".

Divisors: 1 2 4 8 11 22 44 88 782993 1565986 3131972 6263944 8612923 17225846 34451692 68903384