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68889060 = 223251920143
BaseRepresentation
bin1000001101100…
…10100111100100
311210121221000200
410012302213210
5120113422220
610500310500
71464355512
oct406624744
9153557020
1068889060
1135982409
121b0a2430
131136cc76
1492134b2
1560ab890
hex41b29e4

68889060 has 72 divisors (see below), whose sum is σ = 219972480. Its totient is φ = 17402688.

The previous prime is 68889059. The next prime is 68889077. The reversal of 68889060 is 6098886.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 68888997 and 68889015.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6652 + ... + 13491.

Almost surely, 268889060 is an apocalyptic number.

68889060 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68889060 is an abundant number, since it is smaller than the sum of its proper divisors (151083420).

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

68889060 is a wasteful number, since it uses less digits than its factorization.

68889060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20177 (or 20172 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 68889060 is about 8299.9433733008. The cubic root of 68889060 is about 409.9366548974.

The spelling of 68889060 in words is "sixty-eight million, eight hundred eighty-nine thousand, sixty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 19 20 30 36 38 45 57 60 76 90 95 114 171 180 190 228 285 342 380 570 684 855 1140 1710 3420 20143 40286 60429 80572 100715 120858 181287 201430 241716 302145 362574 382717 402860 604290 725148 765434 906435 1148151 1208580 1530868 1812870 1913585 2296302 3444453 3625740 3827170 4592604 5740755 6888906 7654340 11481510 13777812 17222265 22963020 34444530 68889060