Search a number
-
+
68440056 = 23326910601
BaseRepresentation
bin1000001010001…
…00111111111000
311202210010002220
410011010333320
5120010040211
610442524040
71460505456
oct405047770
9152703086
1068440056
11356a6033
121ab06620
1311243799
1491379d6
15601d806
hex4144ff8

68440056 has 32 divisors (see below), whose sum is σ = 171752400. Its totient is φ = 22726400.

The previous prime is 68440049. The next prime is 68440061. The reversal of 68440056 is 65004486.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 68439999 and 68440026.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1156 + ... + 11756.

Almost surely, 268440056 is an apocalyptic number.

It is an amenable number.

68440056 is an abundant number, since it is smaller than the sum of its proper divisors (103312344).

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

68440056 is a wasteful number, since it uses less digits than its factorization.

68440056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10879 (or 10875 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 68440056 is about 8272.8505365442. The cubic root of 68440056 is about 409.0440867265.

The spelling of 68440056 in words is "sixty-eight million, four hundred forty thousand, fifty-six".

Divisors: 1 2 3 4 6 8 12 24 269 538 807 1076 1614 2152 3228 6456 10601 21202 31803 42404 63606 84808 127212 254424 2851669 5703338 8555007 11406676 17110014 22813352 34220028 68440056