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68588590 = 257792157
BaseRepresentation
bin1000001011010…
…01010000101110
311210001122212011
410011221100232
5120024313330
610450031434
71461664510
oct405512056
9153048764
1068588590
1135797694
121ab7857a
1311296285
149175bb0
15604c82a
hex416942e

68588590 has 48 divisors (see below), whose sum is σ = 143815392. Its totient is φ = 23070528.

The previous prime is 68588563. The next prime is 68588623. The reversal of 68588590 is 9588586.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 436792 + ... + 436948.

It is an arithmetic number, because the mean of its divisors is an integer number (2996154).

Almost surely, 268588590 is an apocalyptic number.

68588590 is an abundant number, since it is smaller than the sum of its proper divisors (75226802).

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

68588590 is a wasteful number, since it uses less digits than its factorization.

68588590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 49.

The square root of 68588590 is about 8281.8228669780. The cubic root of 68588590 is about 409.3397861442.

The spelling of 68588590 in words is "sixty-eight million, five hundred eighty-eight thousand, five hundred ninety".

Divisors: 1 2 5 7 10 14 35 70 79 157 158 314 395 553 785 790 1099 1106 1570 2198 2765 5495 5530 6241 10990 12403 12482 24806 31205 43687 62015 62410 86821 87374 124030 173642 218435 434105 436870 868210 979837 1959674 4899185 6858859 9798370 13717718 34294295 68588590