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13480649 = 713148139
BaseRepresentation
bin110011011011…
…001011001001
3221100212222022
4303123023021
511422340044
61200534225
7222404120
oct63331311
927325868
1013480649
117678236
124621375
132a3cc20
141b0cab7
1512b43ee
hexcdb2c9

13480649 has 8 divisors (see below), whose sum is σ = 16591680. Its totient is φ = 10665936.

The previous prime is 13480627. The next prime is 13480657. The reversal of 13480649 is 94608431.

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-13480649 is a prime.

It is a super-2 number, since 2×134806492 = 363455794922402, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13480549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73979 + ... + 74160.

It is an arithmetic number, because the mean of its divisors is an integer number (2073960).

Almost surely, 213480649 is an apocalyptic number.

It is an amenable number.

13480649 is a deficient number, since it is larger than the sum of its proper divisors (3111031).

13480649 is a wasteful number, since it uses less digits than its factorization.

13480649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148159.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 13480649 is about 3671.6003322802. The cubic root of 13480649 is about 237.9963337712.

The spelling of 13480649 in words is "thirteen million, four hundred eighty thousand, six hundred forty-nine".

Divisors: 1 7 13 91 148139 1036973 1925807 13480649