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68057560 = 2351701439
BaseRepresentation
bin1000000111001…
…11100111011000
311202001200102101
410003213213120
5114410320220
610430413144
71454323354
oct403474730
9152050371
1068057560
113546471a
121a9611b4
131113b65c
149078464
155e9530a
hex40e79d8

68057560 has 16 divisors (see below), whose sum is σ = 153129600. Its totient is φ = 27223008.

The previous prime is 68057557. The next prime is 68057567. The reversal of 68057560 is 6575086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68057567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850680 + ... + 850759.

It is an arithmetic number, because the mean of its divisors is an integer number (9570600).

Almost surely, 268057560 is an apocalyptic number.

It is an amenable number.

68057560 is an abundant number, since it is smaller than the sum of its proper divisors (85072040).

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

68057560 is a wasteful number, since it uses less digits than its factorization.

68057560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701450 (or 1701446 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 68057560 is about 8249.7006006279. The cubic root of 68057560 is about 408.2806444118.

It can be divided in two parts, 6805 and 7560, that added together give a triangular number (14365 = T169).

The spelling of 68057560 in words is "sixty-eight million, fifty-seven thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 1701439 3402878 6805756 8507195 13611512 17014390 34028780 68057560