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28619135 = 543313219
BaseRepresentation
bin110110100101…
…1000101111111
31222212000001222
41231023011333
524311303020
62501223555
7465154466
oct155130577
958760058
1028619135
1115177a86
129701bbb
135c105cc
143b2d9dd
1527a4b25
hex1b4b17f

28619135 has 8 divisors (see below), whose sum is σ = 34424880. Its totient is φ = 22840704.

The previous prime is 28619113. The next prime is 28619137. The reversal of 28619135 is 53191682.

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 28619135 - 210 = 28618111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28619095 and 28619104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28619137) 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, 4445 + ... + 8774.

It is an arithmetic number, because the mean of its divisors is an integer number (4303110).

Almost surely, 228619135 is an apocalyptic number.

28619135 is a deficient number, since it is larger than the sum of its proper divisors (5805745).

28619135 is a wasteful number, since it uses less digits than its factorization.

28619135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13657.

The product of its digits is 12960, while the sum is 35.

The square root of 28619135 is about 5349.6855047750. The cubic root of 28619135 is about 305.8807650566.

The spelling of 28619135 in words is "twenty-eight million, six hundred nineteen thousand, one hundred thirty-five".

Divisors: 1 5 433 2165 13219 66095 5723827 28619135