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68251172 = 22111551163
BaseRepresentation
bin1000001000101…
…10111000100100
311202102112000012
410010112320210
5114433014142
610434505352
71456061003
oct404267044
9152375005
1068251172
1135587130
121aa35258
13111a8812
1490c8c3a
155ed2882
hex4116e24

68251172 has 12 divisors (see below), whose sum is σ = 130297776. Its totient is φ = 31023240.

The previous prime is 68251159. The next prime is 68251177. The reversal of 68251172 is 27115286.

It is not an unprimeable number, because it can be changed into a prime (68251177) 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, 775538 + ... + 775625.

It is an arithmetic number, because the mean of its divisors is an integer number (10858148).

Almost surely, 268251172 is an apocalyptic number.

It is an amenable number.

68251172 is a deficient number, since it is larger than the sum of its proper divisors (62046604).

68251172 is a wasteful number, since it uses less digits than its factorization.

68251172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551178 (or 1551176 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 68251172 is about 8261.4267532915. The cubic root of 68251172 is about 408.6674404858.

It can be divided in two parts, 6825 and 1172, that added together give a palindrome (7997).

The spelling of 68251172 in words is "sixty-eight million, two hundred fifty-one thousand, one hundred seventy-two".

Divisors: 1 2 4 11 22 44 1551163 3102326 6204652 17062793 34125586 68251172