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28605153 = 313197229
BaseRepresentation
bin110110100011…
…1101011100001
31222211021220010
41231013223201
524310331103
62501035133
7465065643
oct155075341
958737803
1028605153
1115168525
1296b5aa9
135c07135
143b28893
1527a0903
hex1b47ae1

28605153 has 8 divisors (see below), whose sum is σ = 38174400. Its totient is φ = 19053008.

The previous prime is 28605149. The next prime is 28605163. The reversal of 28605153 is 35150682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28605153 - 22 = 28605149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28605153.

It is not an unprimeable number, because it can be changed into a prime (28605113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343 + ... + 7571.

It is an arithmetic number, because the mean of its divisors is an integer number (4771800).

Almost surely, 228605153 is an apocalyptic number.

It is an amenable number.

28605153 is a deficient number, since it is larger than the sum of its proper divisors (9569247).

28605153 is a wasteful number, since it uses less digits than its factorization.

28605153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8551.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 28605153 is about 5348.3785393332. The cubic root of 28605153 is about 305.8309438265.

The spelling of 28605153 in words is "twenty-eight million, six hundred five thousand, one hundred fifty-three".

Divisors: 1 3 1319 3957 7229 21687 9535051 28605153