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13980648 = 2331152957
BaseRepresentation
bin110101010101…
…001111101000
3222022021211210
4311111033220
512034340043
61215353120
7226555623
oct65251750
928267753
1013980648
117989960
1248227a0
132b86696
141bdcdba
151362633
hexd553e8

13980648 has 32 divisors (see below), whose sum is σ = 38129760. Its totient is φ = 4236480.

The previous prime is 13980643. The next prime is 13980653. The reversal of 13980648 is 84608931.

It is an interprime number because it is at equal distance from previous prime (13980643) and next prime (13980653).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13980641) 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, 26215 + ... + 26742.

It is an arithmetic number, because the mean of its divisors is an integer number (1191555).

Almost surely, 213980648 is an apocalyptic number.

It is an amenable number.

13980648 is an abundant number, since it is smaller than the sum of its proper divisors (24149112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13980648 is a wasteful number, since it uses less digits than its factorization.

13980648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52977 (or 52973 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 13980648 is about 3739.0704727245. The cubic root of 13980648 is about 240.9031250365.

The spelling of 13980648 in words is "thirteen million, nine hundred eighty thousand, six hundred forty-eight".

Divisors: 1 2 3 4 6 8 11 12 22 24 33 44 66 88 132 264 52957 105914 158871 211828 317742 423656 582527 635484 1165054 1270968 1747581 2330108 3495162 4660216 6990324 13980648