Search a number
-
+
68627880 = 23325190633
BaseRepresentation
bin1000001011100…
…10110110101000
311210010122202100
410011302312220
5120032043010
610450533400
71462220166
oct405626650
9153118670
1068627880
1135814162
121ab97260
13112ab119
149186236
1560592c0
hex4172da8

68627880 has 48 divisors (see below), whose sum is σ = 223041780. Its totient is φ = 18300672.

The previous prime is 68627873. The next prime is 68627917. The reversal of 68627880 is 8872686.

It can be written as a sum of positive squares in 2 ways, for example, as 68260644 + 367236 = 8262^2 + 606^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94957 + ... + 95676.

Almost surely, 268627880 is an apocalyptic number.

68627880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68627880 is an abundant number, since it is smaller than the sum of its proper divisors (154413900).

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

68627880 is a wasteful number, since it uses less digits than its factorization.

68627880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190650 (or 190643 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 68627880 is about 8284.1945896991. The cubic root of 68627880 is about 409.4179327193.

The spelling of 68627880 in words is "sixty-eight million, six hundred twenty-seven thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 360 190633 381266 571899 762532 953165 1143798 1525064 1715697 1906330 2287596 2859495 3431394 3812660 4575192 5718990 6862788 7625320 8578485 11437980 13725576 17156970 22875960 34313940 68627880