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68877030 = 23517294657
BaseRepresentation
bin1000001101011…
…11101011100110
311210121022112010
410012233223212
5120113031110
610500135050
71464305445
oct406575346
9153538463
1068877030
1135974372
121b097486
1311367651
14920cd5c
1560a8020
hex41afae6

68877030 has 64 divisors (see below), whose sum is σ = 181103040. Its totient is φ = 16687104.

The previous prime is 68876993. The next prime is 68877031. The reversal of 68877030 is 3077886.

It is a self number, because there is not a number n which added to its sum of digits gives 68877030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68877031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12462 + ... + 17118.

It is an arithmetic number, because the mean of its divisors is an integer number (2829735).

Almost surely, 268877030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68877030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90551520).

68877030 is an abundant number, since it is smaller than the sum of its proper divisors (112226010).

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

68877030 is a wasteful number, since it uses less digits than its factorization.

68877030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4713.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 68877030 is about 8299.2186379201. The cubic root of 68877030 is about 409.9127912871.

The spelling of 68877030 in words is "sixty-eight million, eight hundred seventy-seven thousand, thirty".

Divisors: 1 2 3 5 6 10 15 17 29 30 34 51 58 85 87 102 145 170 174 255 290 435 493 510 870 986 1479 2465 2958 4657 4930 7395 9314 13971 14790 23285 27942 46570 69855 79169 135053 139710 158338 237507 270106 395845 405159 475014 675265 791690 810318 1187535 1350530 2025795 2295901 2375070 4051590 4591802 6887703 11479505 13775406 22959010 34438515 68877030