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13630930 = 251363093
BaseRepresentation
bin110011111111…
…110111010010
3221122112010021
4303333313102
511442142210
61204054054
7223601215
oct63776722
927575107
1013630930
117770135
12469432a
132a93451
141b4b77c
1512e3bda
hexcffdd2

13630930 has 8 divisors (see below), whose sum is σ = 24535692. Its totient is φ = 5452368.

The previous prime is 13630919. The next prime is 13630933. The reversal of 13630930 is 3903631.

It can be written as a sum of positive squares in 2 ways, for example, as 13446889 + 184041 = 3667^2 + 429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13630895 and 13630904.

It is not an unprimeable number, because it can be changed into a prime (13630933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681537 + ... + 681556.

Almost surely, 213630930 is an apocalyptic number.

13630930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13630930 is a deficient number, since it is larger than the sum of its proper divisors (10904762).

13630930 is a wasteful number, since it uses less digits than its factorization.

13630930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363100.

The product of its (nonzero) digits is 1458, while the sum is 25.

The square root of 13630930 is about 3692.0089382340. The cubic root of 13630930 is about 238.8774544935.

The spelling of 13630930 in words is "thirteen million, six hundred thirty thousand, nine hundred thirty".

Divisors: 1 2 5 10 1363093 2726186 6815465 13630930