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19065085 = 5131312239
BaseRepresentation
bin100100010111…
…0100011111101
31022212121101021
41020232203331
514340040320
61520344141
7321023224
oct110564375
938777337
1019065085
11a841976
126475051
133c46a20
142763cbb
151a18daa
hex122e8fd

19065085 has 16 divisors (see below), whose sum is σ = 24837120. Its totient is φ = 13965120.

The previous prime is 19065077. The next prime is 19065089. The reversal of 19065085 is 58056091.

It is not a de Polignac number, because 19065085 - 23 = 19065077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19065085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19065089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7396 + ... + 9634.

It is an arithmetic number, because the mean of its divisors is an integer number (1552320).

Almost surely, 219065085 is an apocalyptic number.

It is an amenable number.

19065085 is a deficient number, since it is larger than the sum of its proper divisors (5772035).

19065085 is a wasteful number, since it uses less digits than its factorization.

19065085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 19065085 is about 4366.3583224468. The cubic root of 19065085 is about 267.1445069613.

The spelling of 19065085 in words is "nineteen million, sixty-five thousand, eighty-five".

Divisors: 1 5 13 65 131 655 1703 2239 8515 11195 29107 145535 293309 1466545 3813017 19065085