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68238254 = 2731157231
BaseRepresentation
bin1000001000100…
…11101110101110
311202101212021202
410010103232232
5114432111004
610434325502
71456005230
oct404235656
9152355252
1068238254
1135578457
121aa29892
13111a2986
1490c4250
155ecdb1e
hex4113bae

68238254 has 16 divisors (see below), whose sum is σ = 120754176. Its totient is φ = 28301400.

The previous prime is 68238241. The next prime is 68238257. The reversal of 68238254 is 45283286.

68238254 = T4412 + T4413 + ... + T4418.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68238257) by changing a digit.

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, 78182 + ... + 79049.

It is an arithmetic number, because the mean of its divisors is an integer number (7547136).

Almost surely, 268238254 is an apocalyptic number.

68238254 is a deficient number, since it is larger than the sum of its proper divisors (52515922).

68238254 is a wasteful number, since it uses less digits than its factorization.

68238254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157271.

The product of its digits is 92160, while the sum is 38.

The square root of 68238254 is about 8260.6448900797. The cubic root of 68238254 is about 408.6416558292.

The spelling of 68238254 in words is "sixty-eight million, two hundred thirty-eight thousand, two hundred fifty-four".

Divisors: 1 2 7 14 31 62 217 434 157231 314462 1100617 2201234 4874161 9748322 34119127 68238254