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68758460 = 2253437923
BaseRepresentation
bin1000001100100…
…10101110111100
311210101021212122
410012102232330
5120100232320
610453422112
71463302661
oct406225674
9153337778
1068758460
11358a3281
121b03a938
13113256a4
1491bba68
156082d25
hex4192bbc

68758460 has 12 divisors (see below), whose sum is σ = 144392808. Its totient is φ = 27503376.

The previous prime is 68758441. The next prime is 68758471. The reversal of 68758460 is 6485786.

It is a congruent number.

It is an unprimeable number.

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, 1718942 + ... + 1718981.

It is an arithmetic number, because the mean of its divisors is an integer number (12032734).

Almost surely, 268758460 is an apocalyptic number.

It is an amenable number.

68758460 is an abundant number, since it is smaller than the sum of its proper divisors (75634348).

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

68758460 is a wasteful number, since it uses less digits than its factorization.

68758460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437932 (or 3437930 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 68758460 is about 8292.0721173902. The cubic root of 68758460 is about 409.6774381455.

The spelling of 68758460 in words is "sixty-eight million, seven hundred fifty-eight thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 3437923 6875846 13751692 17189615 34379230 68758460