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28361727 = 324767049
BaseRepresentation
bin110110000110…
…0001111111111
31222100220222100
41230030033333
524230033402
62451520143
7463033152
oct154141777
958326870
1028361727
1115011649
1295b9053
135b503b4
143aa3c99
15275371c
hex1b0c3ff

28361727 has 12 divisors (see below), whose sum is σ = 41839200. Its totient is φ = 18505248.

The previous prime is 28361717. The next prime is 28361819. The reversal of 28361727 is 72716382.

It is not a de Polignac number, because 28361727 - 211 = 28359679 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28361691 and 28361700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28361717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33102 + ... + 33947.

It is an arithmetic number, because the mean of its divisors is an integer number (3486600).

Almost surely, 228361727 is an apocalyptic number.

28361727 is a deficient number, since it is larger than the sum of its proper divisors (13477473).

28361727 is a wasteful number, since it uses less digits than its factorization.

28361727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67102 (or 67099 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 28361727 is about 5325.5729269253. The cubic root of 28361727 is about 304.9609445647.

The spelling of 28361727 in words is "twenty-eight million, three hundred sixty-one thousand, seven hundred twenty-seven".

Divisors: 1 3 9 47 141 423 67049 201147 603441 3151303 9453909 28361727