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68918106 = 2311486351
BaseRepresentation
bin1000001101110…
…01101101011010
311210200101212110
410012321231122
5120120334411
610501053150
71464536265
oct406715532
9153611773
1068918106
11359a2214
121b0b71b6
131138025a
14921dcdc
1560b52a6
hex41b9b5a

68918106 has 8 divisors (see below), whose sum is σ = 137836224. Its totient is φ = 22972700.

The previous prime is 68918081. The next prime is 68918107. The reversal of 68918106 is 60181986.

It is a sphenic number, since it is the product of 3 distinct primes.

68918106 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (68918107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5743170 + ... + 5743181.

It is an arithmetic number, because the mean of its divisors is an integer number (17229528).

Almost surely, 268918106 is an apocalyptic number.

68918106 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68918106 is a wasteful number, since it uses less digits than its factorization.

68918106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11486356.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 68918106 is about 8301.6929598727. The cubic root of 68918106 is about 409.9942612720.

The spelling of 68918106 in words is "sixty-eight million, nine hundred eighteen thousand, one hundred six".

Divisors: 1 2 3 6 11486351 22972702 34459053 68918106