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68884902 = 23228113619
BaseRepresentation
bin1000001101100…
…01100110100110
311210121201022200
410012301212212
5120113304102
610500235330
71464340422
oct406614646
9153551280
1068884902
113597a279
121b09bb46
131136b0c8
149211b82
1560aa51c
hex41b19a6

68884902 has 24 divisors (see below), whose sum is σ = 149792760. Its totient is φ = 22878240.

The previous prime is 68884897. The next prime is 68884903. The reversal of 68884902 is 20948886.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68884903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1752 + ... + 11867.

It is an arithmetic number, because the mean of its divisors is an integer number (6241365).

Almost surely, 268884902 is an apocalyptic number.

68884902 is an abundant number, since it is smaller than the sum of its proper divisors (80907858).

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

68884902 is a wasteful number, since it uses less digits than its factorization.

68884902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13908 (or 13905 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 68884902 is about 8299.6928858844. The cubic root of 68884902 is about 409.9284070909.

The spelling of 68884902 in words is "sixty-eight million, eight hundred eighty-four thousand, nine hundred two".

Divisors: 1 2 3 6 9 18 281 562 843 1686 2529 5058 13619 27238 40857 81714 122571 245142 3826939 7653878 11480817 22961634 34442451 68884902