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28595172 = 22343151367
BaseRepresentation
bin110110100010…
…1001111100100
31222210210012110
41231011033210
524310021142
62500521020
7465024564
oct155051744
958723173
1028595172
1115160a81
1296b0170
135c02728
143b24da4
15279c99c
hex1b453e4

28595172 has 48 divisors (see below), whose sum is σ = 68913152. Its totient is φ = 9223200.

The previous prime is 28595159. The next prime is 28595227. The reversal of 28595172 is 27159582.

It is a self number, because there is not a number n which added to its sum of digits gives 28595172.

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 15 ways as a sum of consecutive naturals, for example, 77733 + ... + 78099.

Almost surely, 228595172 is an apocalyptic number.

It is an amenable number.

28595172 is an abundant number, since it is smaller than the sum of its proper divisors (40317980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28595172 is a wasteful number, since it uses less digits than its factorization.

28595172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 566 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 28595172 is about 5347.4453713900. The cubic root of 28595172 is about 305.7953691901.

The spelling of 28595172 in words is "twenty-eight million, five hundred ninety-five thousand, one hundred seventy-two".

Divisors: 1 2 3 4 6 12 43 86 129 151 172 258 302 367 453 516 604 734 906 1101 1468 1812 2202 4404 6493 12986 15781 19479 25972 31562 38958 47343 55417 63124 77916 94686 110834 166251 189372 221668 332502 665004 2382931 4765862 7148793 9531724 14297586 28595172