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20256095 = 517238307
BaseRepresentation
bin100110101000…
…1010101011111
31102010010010202
41031101111133
520141143340
62002054115
7334113446
oct115212537
942103122
1020256095
1110485782
12694a33b
134272b72
142993d5d
151ba1c15
hex135155f

20256095 has 8 divisors (see below), whose sum is σ = 25737264. Its totient is φ = 15251584.

The previous prime is 20256073. The next prime is 20256127. The reversal of 20256095 is 59065202.

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

It is not a de Polignac number, because 20256095 - 28 = 20255839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119069 + ... + 119238.

It is an arithmetic number, because the mean of its divisors is an integer number (3217158).

Almost surely, 220256095 is an apocalyptic number.

20256095 is a deficient number, since it is larger than the sum of its proper divisors (5481169).

20256095 is a wasteful number, since it uses less digits than its factorization.

20256095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238329.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 20256095 is about 4500.6771712710. The cubic root of 20256095 is about 272.5954327249.

The spelling of 20256095 in words is "twenty million, two hundred fifty-six thousand, ninety-five".

Divisors: 1 5 17 85 238307 1191535 4051219 20256095