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12748011 = 3171811381
BaseRepresentation
bin110000101000…
…010011101011
3212222122222120
4300220103223
511230414021
61133122323
7213233133
oct60502353
925878876
1012748011
117217851
1243293a3
132844603
14199bac3
1511bc2c6
hexc284eb

12748011 has 16 divisors (see below), whose sum is σ = 18109728. Its totient is φ = 7948800.

The previous prime is 12747983. The next prime is 12748013. The reversal of 12748011 is 11084721.

It is not a de Polignac number, because 12748011 - 27 = 12747883 is a prime.

It is a super-2 number, since 2×127480112 = 325023568912242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12748013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8541 + ... + 9921.

It is an arithmetic number, because the mean of its divisors is an integer number (1131858).

Almost surely, 212748011 is an apocalyptic number.

12748011 is a deficient number, since it is larger than the sum of its proper divisors (5361717).

12748011 is a wasteful number, since it uses less digits than its factorization.

12748011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 12748011 is about 3570.4356876998. The cubic root of 12748011 is about 233.6042877313.

The spelling of 12748011 in words is "twelve million, seven hundred forty-eight thousand, eleven".

Divisors: 1 3 17 51 181 543 1381 3077 4143 9231 23477 70431 249961 749883 4249337 12748011