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107944421 = 1356914593
BaseRepresentation
bin1100110111100…
…01100111100101
321112010010220112
412123301213211
5210113210141
614413342405
72450340524
oct633614745
9245103815
10107944421
1155a28272
1230197a05
1319495850
141049c4bb
1597237eb
hex66f19e5

107944421 has 8 divisors (see below), whose sum is σ = 116460120. Its totient is φ = 99459072.

The previous prime is 107944399. The next prime is 107944439. The reversal of 107944421 is 124449701.

It can be written as a sum of positive squares in 4 ways, for example, as 5712100 + 102232321 = 2390^2 + 10111^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 107944421 - 26 = 107944357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107944471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101 + ... + 14693.

It is an arithmetic number, because the mean of its divisors is an integer number (14557515).

Almost surely, 2107944421 is an apocalyptic number.

It is an amenable number.

107944421 is a deficient number, since it is larger than the sum of its proper divisors (8515699).

107944421 is a wasteful number, since it uses less digits than its factorization.

107944421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15175.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 107944421 is about 10389.6304554108. The cubic root of 107944421 is about 476.1386106815.

The spelling of 107944421 in words is "one hundred seven million, nine hundred forty-four thousand, four hundred twenty-one".

Divisors: 1 13 569 7397 14593 189709 8303417 107944421