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28250695 = 511513649
BaseRepresentation
bin110101111000…
…1001001000111
31222011021200001
41223301021013
524213010240
62445302131
7462061354
oct153611107
958137601
1028250695
1114a46190
129564947
135b119b5
143a7562b
15273089a
hex1af1247

28250695 has 8 divisors (see below), whose sum is σ = 36982800. Its totient is φ = 20545920.

The previous prime is 28250689. The next prime is 28250707. The reversal of 28250695 is 59605282.

It is a happy number.

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

It is not a de Polignac number, because 28250695 - 215 = 28217927 is a prime.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 256770 + ... + 256879.

It is an arithmetic number, because the mean of its divisors is an integer number (4622850).

Almost surely, 228250695 is an apocalyptic number.

28250695 is a deficient number, since it is larger than the sum of its proper divisors (8732105).

28250695 is a wasteful number, since it uses less digits than its factorization.

28250695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513665.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 28250695 is about 5315.1382860656. The cubic root of 28250695 is about 304.5624649969.

The spelling of 28250695 in words is "twenty-eight million, two hundred fifty thousand, six hundred ninety-five".

Divisors: 1 5 11 55 513649 2568245 5650139 28250695