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13630373 = 16781619
BaseRepresentation
bin110011111111…
…101110100101
3221122111100122
4303333232211
511442132443
61204051325
7223566461
oct63775645
927574318
1013630373
11776a779
124693b45
132a93113
141b4b4a1
1512e3968
hexcffba5

13630373 has 4 divisors (see below), whose sum is σ = 13712160. Its totient is φ = 13548588.

The previous prime is 13630369. The next prime is 13630403. The reversal of 13630373 is 37303631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13630373 - 22 = 13630369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13630363) 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, 40643 + ... + 40976.

It is an arithmetic number, because the mean of its divisors is an integer number (3428040).

Almost surely, 213630373 is an apocalyptic number.

It is an amenable number.

13630373 is a deficient number, since it is larger than the sum of its proper divisors (81787).

13630373 is an equidigital number, since it uses as much as digits as its factorization.

13630373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81786.

The product of its (nonzero) digits is 3402, while the sum is 26.

The square root of 13630373 is about 3691.9335042766. The cubic root of 13630373 is about 238.8742007034.

The spelling of 13630373 in words is "thirteen million, six hundred thirty thousand, three hundred seventy-three".

Divisors: 1 167 81619 13630373