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28827230 = 2553109499
BaseRepresentation
bin110110111110…
…1111001011110
32000020120112012
41231331321132
524334432410
62505511222
7500012255
oct155757136
960216465
1028827230
11152aa363
1297a2512
135c84243
143b8579c
1527e6605
hex1b7de5e

28827230 has 32 divisors (see below), whose sum is σ = 53460000. Its totient is φ = 11187072.

The previous prime is 28827209. The next prime is 28827233. The reversal of 28827230 is 3272882.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28827233) 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, 57521 + ... + 58019.

It is an arithmetic number, because the mean of its divisors is an integer number (1670625).

Almost surely, 228827230 is an apocalyptic number.

28827230 is a deficient number, since it is larger than the sum of its proper divisors (24632770).

28827230 is a wasteful number, since it uses less digits than its factorization.

28827230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 28827230 is about 5369.0995520664. The cubic root of 28827230 is about 306.6203471840.

The spelling of 28827230 in words is "twenty-eight million, eight hundred twenty-seven thousand, two hundred thirty".

Divisors: 1 2 5 10 53 106 109 218 265 499 530 545 998 1090 2495 4990 5777 11554 26447 28885 52894 54391 57770 108782 132235 264470 271955 543910 2882723 5765446 14413615 28827230