Search a number
-
+
68168023 = 7113771337
BaseRepresentation
bin1000001000000…
…10100101010111
311202021021221121
410010002211113
5114422334043
610433024411
71455263410
oct404024527
9152237847
1068168023
113552a710
121a9b5107
1311179a11
1490a6807
155eb7ded
hex4102957

68168023 has 32 divisors (see below), whose sum is σ = 88777728. Its totient is φ = 50803200.

The previous prime is 68168003. The next prime is 68168027. The reversal of 68168023 is 32086186.

It is not a de Polignac number, because 68168023 - 225 = 34613591 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68168023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68168027) 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, 202111 + ... + 202447.

It is an arithmetic number, because the mean of its divisors is an integer number (2774304).

Almost surely, 268168023 is an apocalyptic number.

68168023 is a deficient number, since it is larger than the sum of its proper divisors (20609705).

68168023 is a wasteful number, since it uses less digits than its factorization.

68168023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 68168023 is about 8256.3928564477. The cubic root of 68168023 is about 408.5014159985.

The spelling of 68168023 in words is "sixty-eight million, one hundred sixty-eight thousand, twenty-three".

Divisors: 1 7 11 37 71 77 259 337 407 497 781 2359 2627 2849 3707 5467 12469 18389 23927 25949 28897 87283 137159 167489 202279 263197 885299 960113 1842379 6197093 9738289 68168023