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19064969 = 731131163
BaseRepresentation
bin100100010111…
…0100010001001
31022212121012222
41020232202021
514340034334
61520343425
7321023000
oct110564211
938777188
1019064969
11a841880
126474b75
133c46961
142763c37
151a18d2e
hex122e889

19064969 has 32 divisors (see below), whose sum is σ = 25190400. Its totient is φ = 14288400.

The previous prime is 19064963. The next prime is 19064971. The reversal of 19064969 is 96946091.

It is not a de Polignac number, because 19064969 - 216 = 18999433 is a prime.

It is a super-2 number, since 2×190649692 = 726946085941922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19064963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116882 + ... + 117044.

It is an arithmetic number, because the mean of its divisors is an integer number (787200).

Almost surely, 219064969 is an apocalyptic number.

It is an amenable number.

19064969 is a deficient number, since it is larger than the sum of its proper divisors (6125431).

19064969 is a wasteful number, since it uses less digits than its factorization.

19064969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 19064969 is about 4366.3450390458. The cubic root of 19064969 is about 267.1439651537.

The spelling of 19064969 in words is "nineteen million, sixty-four thousand, nine hundred sixty-nine".

Divisors: 1 7 11 31 49 77 163 217 341 343 539 1141 1519 1793 2387 3773 5053 7987 10633 12551 16709 35371 55583 55909 87857 116963 247597 389081 614999 1733179 2723567 19064969