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13648028 = 224379349
BaseRepresentation
bin110100000100…
…000010011100
3221200101120112
4310010002130
511443214103
61204305152
7224002112
oct64040234
927611515
1013648028
117781a69
1246a21b8
132a9b174
141b53ab2
1512e8cd8
hexd0409c

13648028 has 12 divisors (see below), whose sum is σ = 24439800. Its totient is φ = 6665232.

The previous prime is 13648021. The next prime is 13648031. The reversal of 13648028 is 82084631.

It is a junction number, because it is equal to n+sod(n) for n = 13647985 and 13648003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13648021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39503 + ... + 39846.

It is an arithmetic number, because the mean of its divisors is an integer number (2036650).

Almost surely, 213648028 is an apocalyptic number.

It is an amenable number.

13648028 is a deficient number, since it is larger than the sum of its proper divisors (10791772).

13648028 is a wasteful number, since it uses less digits than its factorization.

13648028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79396 (or 79394 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 13648028 is about 3694.3237540854. The cubic root of 13648028 is about 238.9772916573.

The spelling of 13648028 in words is "thirteen million, six hundred forty-eight thousand, twenty-eight".

Divisors: 1 2 4 43 86 172 79349 158698 317396 3412007 6824014 13648028