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20703995 = 513318523
BaseRepresentation
bin100111011111…
…0101011111011
31102221212112122
41032332223323
520300011440
62015431455
7340660334
oct116765373
942855478
1020703995
1110761244
126b2558b
13439b9b0
142a6d28b
151c3e7b5
hex13beafb

20703995 has 8 divisors (see below), whose sum is σ = 26756016. Its totient is φ = 15289056.

The previous prime is 20703967. The next prime is 20704007. The reversal of 20703995 is 59930702.

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 20703995 - 26 = 20703931 is a prime.

It is a Duffinian 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, 159197 + ... + 159326.

It is an arithmetic number, because the mean of its divisors is an integer number (3344502).

Almost surely, 220703995 is an apocalyptic number.

20703995 is a deficient number, since it is larger than the sum of its proper divisors (6052021).

20703995 is a wasteful number, since it uses less digits than its factorization.

20703995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318541.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 20703995 is about 4550.1642827485. The cubic root of 20703995 is about 274.5900006031.

The spelling of 20703995 in words is "twenty million, seven hundred three thousand, nine hundred ninety-five".

Divisors: 1 5 13 65 318523 1592615 4140799 20703995