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20630076 = 22310316691
BaseRepresentation
bin100111010110…
…0101000111100
31102211010010220
41032230220330
520240130301
62014101340
7340231665
oct116545074
942733126
1020630076
1110710755
126aaa850
13437415c
142a5036c
151c27936
hex13aca3c

20630076 has 24 divisors (see below), whose sum is σ = 48607104. Its totient is φ = 6809520.

The previous prime is 20630069. The next prime is 20630083. The reversal of 20630076 is 67003602.

It is an interprime number because it is at equal distance from previous prime (20630069) and next prime (20630083).

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, 7110 + ... + 9581.

It is an arithmetic number, because the mean of its divisors is an integer number (2025296).

Almost surely, 220630076 is an apocalyptic number.

It is an amenable number.

20630076 is an abundant number, since it is smaller than the sum of its proper divisors (27977028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20630076 is a wasteful number, since it uses less digits than its factorization.

20630076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16801 (or 16799 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 20630076 is about 4542.0343459732. The cubic root of 20630076 is about 274.2628234555.

Adding to 20630076 its reverse (67003602), we get a palindrome (87633678).

The spelling of 20630076 in words is "twenty million, six hundred thirty thousand, seventy-six".

Divisors: 1 2 3 4 6 12 103 206 309 412 618 1236 16691 33382 50073 66764 100146 200292 1719173 3438346 5157519 6876692 10315038 20630076