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20614445 = 510913779
BaseRepresentation
bin100111010100…
…0110100101101
31102210022200222
41032220310231
520234130240
62013501125
7340135265
oct116506455
942708628
1020614445
11106aaa35
126aa17a5
134369cc7
142a487a5
151c22eb5
hex13a8d2d

20614445 has 8 divisors (see below), whose sum is σ = 24766560. Its totient is φ = 16472080.

The previous prime is 20614427. The next prime is 20614453. The reversal of 20614445 is 54441602.

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

It is not a de Polignac number, because 20614445 - 218 = 20352301 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 3566 + ... + 7344.

It is an arithmetic number, because the mean of its divisors is an integer number (3095820).

Almost surely, 220614445 is an apocalyptic number.

It is an amenable number.

20614445 is a deficient number, since it is larger than the sum of its proper divisors (4152115).

20614445 is a wasteful number, since it uses less digits than its factorization.

20614445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4875.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 20614445 is about 4540.3133151799. The cubic root of 20614445 is about 274.1935381173.

The spelling of 20614445 in words is "twenty million, six hundred fourteen thousand, four hundred forty-five".

Divisors: 1 5 1091 3779 5455 18895 4122889 20614445