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13030420 = 22513232179
BaseRepresentation
bin110001101101…
…010000010100
3220112000101011
4301231100110
511313433140
61143142004
7215520364
oct61552024
926460334
1013030420
11739aa47
124444904
132913010
141a329a4
151225cea
hexc6d414

13030420 has 48 divisors (see below), whose sum is σ = 30764160. Its totient is φ = 4599936.

The previous prime is 13030403. The next prime is 13030453. The reversal of 13030420 is 2403031.

13030420 = T215 + T216 + ... + T444.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 13030420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4891 + ... + 7069.

It is an arithmetic number, because the mean of its divisors is an integer number (640920).

Almost surely, 213030420 is an apocalyptic number.

13030420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13030420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15382080).

13030420 is an abundant number, since it is smaller than the sum of its proper divisors (17733740).

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

13030420 is a wasteful number, since it uses less digits than its factorization.

13030420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224 (or 2222 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 13030420 is about 3609.7673055198. The cubic root of 13030420 is about 235.3167300082.

Adding to 13030420 its reverse (2403031), we get a palindrome (15433451).

The spelling of 13030420 in words is "thirteen million, thirty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 13 20 23 26 46 52 65 92 115 130 230 260 299 460 598 1196 1495 2179 2990 4358 5980 8716 10895 21790 28327 43580 50117 56654 100234 113308 141635 200468 250585 283270 501170 566540 651521 1002340 1303042 2606084 3257605 6515210 13030420