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68519884 = 2253323207
BaseRepresentation
bin1000001010110…
…00011111001100
311202221011121111
410011120133030
5120020114014
610444341404
71461260266
oct405303714
9152834544
1068519884
1135750004
121ab44864
1311270c14
149158b36
1560372c4
hex41587cc

68519884 has 12 divisors (see below), whose sum is σ = 122172624. Its totient is φ = 33613424.

The previous prime is 68519881. The next prime is 68519963. The reversal of 68519884 is 48891586.

It is not an unprimeable number, because it can be changed into a prime (68519881) 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, 161392 + ... + 161815.

It is an arithmetic number, because the mean of its divisors is an integer number (10181052).

Almost surely, 268519884 is an apocalyptic number.

It is an amenable number.

68519884 is a deficient number, since it is larger than the sum of its proper divisors (53652740).

68519884 is a wasteful number, since it uses less digits than its factorization.

68519884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323264 (or 323262 counting only the distinct ones).

The product of its digits is 552960, while the sum is 49.

The square root of 68519884 is about 8277.6738278335. The cubic root of 68519884 is about 409.2030603159.

The spelling of 68519884 in words is "sixty-eight million, five hundred nineteen thousand, eight hundred eighty-four".

Divisors: 1 2 4 53 106 212 323207 646414 1292828 17129971 34259942 68519884