Search a number
-
+
68088216 = 2337405287
BaseRepresentation
bin1000000111011…
…11000110011000
311202010020110210
410003233012120
5114412310331
610431211120
71454511630
oct403570630
9152106423
1068088216
1135485759
121a976aa0
131114c5b1
1490856c0
155e9e446
hex40ef198

68088216 has 32 divisors (see below), whose sum is σ = 194538240. Its totient is φ = 19453728.

The previous prime is 68088203. The next prime is 68088217. The reversal of 68088216 is 61288086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68088217) 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, 202476 + ... + 202811.

It is an arithmetic number, because the mean of its divisors is an integer number (6079320).

Almost surely, 268088216 is an apocalyptic number.

It is an amenable number.

68088216 is an abundant number, since it is smaller than the sum of its proper divisors (126450024).

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

68088216 is a wasteful number, since it uses less digits than its factorization.

68088216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405303 (or 405299 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 68088216 is about 8251.5583982664. The cubic root of 68088216 is about 408.3419374928.

The spelling of 68088216 in words is "sixty-eight million, eighty-eight thousand, two hundred sixteen".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 405287 810574 1215861 1621148 2431722 2837009 3242296 4863444 5674018 8511027 9726888 11348036 17022054 22696072 34044108 68088216