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13630541 = 371372689
BaseRepresentation
bin110011111111…
…110001001101
3221122111120212
4303333301031
511442134131
61204052205
7223600121
oct63776115
927574525
1013630541
11776a911
124694065
132a93212
141b4b581
1512e3a2b
hexcffc4d

13630541 has 8 divisors (see below), whose sum is σ = 14106360. Its totient is φ = 13160448.

The previous prime is 13630469. The next prime is 13630553. The reversal of 13630541 is 14503631.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1755625 + 11874916 = 1325^2 + 3446^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13630541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13630741) 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, 3725 + ... + 6413.

It is an arithmetic number, because the mean of its divisors is an integer number (1763295).

Almost surely, 213630541 is an apocalyptic number.

It is an amenable number.

13630541 is a deficient number, since it is larger than the sum of its proper divisors (475819).

13630541 is a wasteful number, since it uses less digits than its factorization.

13630541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 13630541 is about 3691.9562565123. The cubic root of 13630541 is about 238.8751821072.

The spelling of 13630541 in words is "thirteen million, six hundred thirty thousand, five hundred forty-one".

Divisors: 1 37 137 2689 5069 99493 368393 13630541