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68250357 = 347120371
BaseRepresentation
bin1000001000101…
…10101011110101
311202102110220000
410010112223311
5114433002412
610434501513
71456055430
oct404265365
9152373800
1068250357
113558655a
121aa34899
13111a8336
1490c8817
155ed24dc
hex4116af5

68250357 has 20 divisors (see below), whose sum is σ = 116520096. Its totient is φ = 38999880.

The previous prime is 68250349. The next prime is 68250419. The reversal of 68250357 is 75305286.

It is not a de Polignac number, because 68250357 - 23 = 68250349 is a prime.

It is a super-2 number, since 2×682503572 = 9316222461254898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68254357) 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 19 ways as a sum of consecutive naturals, for example, 59619 + ... + 60752.

Almost surely, 268250357 is an apocalyptic number.

It is an amenable number.

68250357 is a deficient number, since it is larger than the sum of its proper divisors (48269739).

68250357 is a wasteful number, since it uses less digits than its factorization.

68250357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120390 (or 120381 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 68250357 is about 8261.3774275238. The cubic root of 68250357 is about 408.6658138212.

The spelling of 68250357 in words is "sixty-eight million, two hundred fifty thousand, three hundred fifty-seven".

Divisors: 1 3 7 9 21 27 63 81 189 567 120371 361113 842597 1083339 2527791 3250017 7583373 9750051 22750119 68250357