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28483569 = 345932
BaseRepresentation
bin110110010100…
…1111111110001
31222121010010000
41230221333301
524242433234
62454300213
7464051322
oct154517761
958533100
1028483569
1115095144
129657669
135b939aa
143ad6449
152779899
hex1b29ff1

28483569 has 15 divisors (see below), whose sum is σ = 42621403. Its totient is φ = 18957024.

The previous prime is 28483547. The next prime is 28483579. The reversal of 28483569 is 96538482.

The square root of 28483569 is 5337.

It is a perfect power (a square), and thus also a powerful number.

28483569 is a `hidden beast` number, since 2 + 8 + 4 + 83 + 569 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17514225 + 10969344 = 4185^2 + 3312^2 .

It is not a de Polignac number, because 28483569 - 25 = 28483537 is a prime.

It is a super-2 number, since 2×284835692 = 1622627405955522, 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 (28483579) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 47737 + ... + 48329.

Almost surely, 228483569 is an apocalyptic number.

28483569 is the 5337-th square number.

28483569 is the 2669-th centered octagonal number.

It is an amenable number.

28483569 is a deficient number, since it is larger than the sum of its proper divisors (14137834).

28483569 is an frugal number, since it uses more digits than its factorization.

28483569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198 (or 596 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The cubic root of 28483569 is about 305.3970248397.

The spelling of 28483569 in words is "twenty-eight million, four hundred eighty-three thousand, five hundred sixty-nine".

Divisors: 1 3 9 27 81 593 1779 5337 16011 48033 351649 1054947 3164841 9494523 28483569