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13682020 = 2251162191
BaseRepresentation
bin110100001100…
…010101100100
3221202010012111
4310030111210
512000311040
61205130404
7224203162
oct64142544
927663174
1013682020
1177a5560
1246b9a04
132ab0791
141b62232
151303dea
hexd0c564

13682020 has 24 divisors (see below), whose sum is σ = 31344768. Its totient is φ = 4975200.

The previous prime is 13682017. The next prime is 13682021. The reversal of 13682020 is 2028631.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 13681982 and 13682000.

It is not an unprimeable number, because it can be changed into a prime (13682021) 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, 30876 + ... + 31315.

It is an arithmetic number, because the mean of its divisors is an integer number (1306032).

Almost surely, 213682020 is an apocalyptic number.

13682020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13682020 is an abundant number, since it is smaller than the sum of its proper divisors (17662748).

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

13682020 is a wasteful number, since it uses less digits than its factorization.

13682020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62211 (or 62209 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 13682020 is about 3698.9214644272. The cubic root of 13682020 is about 239.1755274121.

The spelling of 13682020 in words is "thirteen million, six hundred eighty-two thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 62191 124382 248764 310955 621910 684101 1243820 1368202 2736404 3420505 6841010 13682020