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68895764 = 227217232931
BaseRepresentation
bin1000001101101…
…00010000010100
311210122021012222
410012310100110
5120114131024
610500401512
71464414200
oct406642024
9153567188
1068895764
1135987453
121b0a6298
1311373032
149215b00
1560ad85e
hex41b4414

68895764 has 144 divisors (see below), whose sum is σ = 165473280. Its totient is φ = 24837120.

The previous prime is 68895763. The next prime is 68895769. The reversal of 68895764 is 46759886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68895763) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2222429 + ... + 2222459.

It is an arithmetic number, because the mean of its divisors is an integer number (1149120).

Almost surely, 268895764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68895764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82736640).

68895764 is an abundant number, since it is smaller than the sum of its proper divisors (96577516).

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

68895764 is a wasteful number, since it uses less digits than its factorization.

68895764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 109 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 53.

The square root of 68895764 is about 8300.3472216528. The cubic root of 68895764 is about 409.9499522492.

The spelling of 68895764 in words is "sixty-eight million, eight hundred ninety-five thousand, seven hundred sixty-four".

Divisors: 1 2 4 7 14 17 23 28 29 31 34 46 49 58 62 68 92 98 116 119 124 161 196 203 217 238 322 391 406 434 476 493 527 644 667 713 782 812 833 868 899 986 1054 1127 1334 1421 1426 1519 1564 1666 1798 1972 2108 2254 2668 2737 2842 2852 3038 3332 3451 3596 3689 4508 4669 4991 5474 5684 6076 6293 6902 7378 9338 9982 10948 11339 12121 12586 13804 14756 15283 18676 19159 19964 20677 22678 24157 24242 25172 25823 30566 32683 34937 38318 41354 44051 45356 48314 48484 51646 61132 65366 69874 76636 79373 82708 84847 88102 96628 103292 106981 130732 139748 144739 158746 169694 176204 213962 289478 317492 339388 351509 427924 555611 578956 593929 703018 748867 1013173 1111222 1187858 1406036 1497734 2026346 2222444 2375716 2460563 2995468 4052692 4921126 9842252 17223941 34447882 68895764