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68806112 = 2531139499
BaseRepresentation
bin1000001100111…
…10010111100000
311210110201020112
410012132113200
5120103243422
610454430452
71463561624
oct406362740
9153421215
1068806112
1135926061
121b062428
131134129b
1491d1184
156091ee2
hex419e5e0

68806112 has 48 divisors (see below), whose sum is σ = 141120000. Its totient is φ = 32987520.

The previous prime is 68806099. The next prime is 68806117. The reversal of 68806112 is 21160886.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68806117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137639 + ... + 138137.

It is an arithmetic number, because the mean of its divisors is an integer number (2940000).

Almost surely, 268806112 is an apocalyptic number.

68806112 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68806112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70560000).

68806112 is an abundant number, since it is smaller than the sum of its proper divisors (72313888).

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

68806112 is a wasteful number, since it uses less digits than its factorization.

68806112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 68806112 is about 8294.9449666649. The cubic root of 68806112 is about 409.7720565204.

Adding to 68806112 its reverse (21160886), we get a palindrome (89966998).

The spelling of 68806112 in words is "sixty-eight million, eight hundred six thousand, one hundred twelve".

Divisors: 1 2 4 8 16 31 32 62 124 139 248 278 496 499 556 992 998 1112 1996 2224 3992 4309 4448 7984 8618 15469 15968 17236 30938 34472 61876 68944 69361 123752 137888 138722 247504 277444 495008 554888 1109776 2150191 2219552 4300382 8600764 17201528 34403056 68806112