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13420360 = 2351572137
BaseRepresentation
bin110011001100…
…011101001000
3221020211021101
4303030131020
511413422420
61155351144
7222033262
oct63143510
927224241
1013420360
117636a08
1245b24b4
132a1b655
141ad4b32
1512a160a
hexccc748

13420360 has 32 divisors (see below), whose sum is σ = 30402360. Its totient is φ = 5331456.

The previous prime is 13420331. The next prime is 13420387. The reversal of 13420360 is 6302431.

It can be written as a sum of positive squares in 4 ways, for example, as 5769604 + 7650756 = 2402^2 + 2766^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5212 + ... + 7348.

Almost surely, 213420360 is an apocalyptic number.

13420360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13420360 is an abundant number, since it is smaller than the sum of its proper divisors (16982000).

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

13420360 is a wasteful number, since it uses less digits than its factorization.

13420360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305 (or 2301 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 13420360 is about 3663.3809520715. The cubic root of 13420360 is about 237.6410095221.

Adding to 13420360 its reverse (6302431), we get a palindrome (19722791).

The spelling of 13420360 in words is "thirteen million, four hundred twenty thousand, three hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 157 314 628 785 1256 1570 2137 3140 4274 6280 8548 10685 17096 21370 42740 85480 335509 671018 1342036 1677545 2684072 3355090 6710180 13420360