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28696365 = 3251933563
BaseRepresentation
bin110110101110…
…1111100101101
31222222221000100
41231131330231
524321240430
62503021313
7465625605
oct155357455
958887010
1028696365
1115220005
12973a839
135c397c9
143b4dc05
1527bc960
hex1b5df2d

28696365 has 24 divisors (see below), whose sum is σ = 52359840. Its totient is φ = 14498784.

The previous prime is 28696333. The next prime is 28696379. The reversal of 28696365 is 56369682.

It is a happy number.

28696365 is a `hidden beast` number, since 2 + 8 + 6 + 9 + 636 + 5 = 666.

It is not a de Polignac number, because 28696365 - 25 = 28696333 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28696365.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15927 + ... + 17636.

It is an arithmetic number, because the mean of its divisors is an integer number (2181660).

Almost surely, 228696365 is an apocalyptic number.

It is an amenable number.

28696365 is a deficient number, since it is larger than the sum of its proper divisors (23663475).

28696365 is a wasteful number, since it uses less digits than its factorization.

28696365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33593 (or 33590 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 28696365 is about 5356.8988230132. The cubic root of 28696365 is about 306.1556621827.

The spelling of 28696365 in words is "twenty-eight million, six hundred ninety-six thousand, three hundred sixty-five".

Divisors: 1 3 5 9 15 19 45 57 95 171 285 855 33563 100689 167815 302067 503445 637697 1510335 1913091 3188485 5739273 9565455 28696365