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20630503 = 174129599
BaseRepresentation
bin100111010110…
…0101111100111
31102211010201201
41032230233213
520240134003
62014103331
7340233145
oct116545747
942733651
1020630503
1110711003
126aaab47
1343743ca
142a50595
151c27b1d
hex13acbe7

20630503 has 8 divisors (see below), whose sum is σ = 22377600. Its totient is φ = 18942720.

The previous prime is 20630501. The next prime is 20630507. The reversal of 20630503 is 30503602.

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 20630503 - 21 = 20630501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20630501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14103 + ... + 15496.

It is an arithmetic number, because the mean of its divisors is an integer number (2797200).

Almost surely, 220630503 is an apocalyptic number.

20630503 is a deficient number, since it is larger than the sum of its proper divisors (1747097).

20630503 is a wasteful number, since it uses less digits than its factorization.

20630503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29657.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 20630503 is about 4542.0813510989. The cubic root of 20630503 is about 274.2647156673.

The spelling of 20630503 in words is "twenty million, six hundred thirty thousand, five hundred three".

Divisors: 1 17 41 697 29599 503183 1213559 20630503