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20344630 = 2519107077
BaseRepresentation
bin100110110011…
…0111100110110
31102021121120211
41031212330312
520202012010
62004020034
7334632535
oct115467466
942247524
1020344630
1110536249
12699161a
1342a4257
1429b831c
151bbd08a
hex1366f36

20344630 has 16 divisors (see below), whose sum is σ = 38548080. Its totient is φ = 7709472.

The previous prime is 20344619. The next prime is 20344679. The reversal of 20344630 is 3644302.

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, 53349 + ... + 53728.

It is an arithmetic number, because the mean of its divisors is an integer number (2409255).

Almost surely, 220344630 is an apocalyptic number.

20344630 is a deficient number, since it is larger than the sum of its proper divisors (18203450).

20344630 is a wasteful number, since it uses less digits than its factorization.

20344630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107103.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 20344630 is about 4510.5021893355. The cubic root of 20344630 is about 272.9920073514.

Adding to 20344630 its reverse (3644302), we get a palindrome (23988932).

The spelling of 20344630 in words is "twenty million, three hundred forty-four thousand, six hundred thirty".

Divisors: 1 2 5 10 19 38 95 190 107077 214154 535385 1070770 2034463 4068926 10172315 20344630