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12748476 = 22313711151
BaseRepresentation
bin110000101000…
…011010111100
3212222200121210
4300220122330
511230422401
61133124420
7213234366
oct60503274
925880553
1012748476
117218134
124329710
1328448a0
14199bd36
1511bc4d6
hexc286bc

12748476 has 48 divisors (see below), whose sum is σ = 32514048. Its totient is φ = 3864000.

The previous prime is 12748469. The next prime is 12748481. The reversal of 12748476 is 67484721.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

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, 10501 + ... + 11651.

It is an arithmetic number, because the mean of its divisors is an integer number (677376).

Almost surely, 212748476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12748476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16257024).

12748476 is an abundant number, since it is smaller than the sum of its proper divisors (19765572).

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

12748476 is a wasteful number, since it uses less digits than its factorization.

12748476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242 (or 1240 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 12748476 is about 3570.5008052093. The cubic root of 12748476 is about 233.6071280351.

The spelling of 12748476 in words is "twelve million, seven hundred forty-eight thousand, four hundred seventy-six".

Divisors: 1 2 3 4 6 12 13 26 39 52 71 78 142 156 213 284 426 852 923 1151 1846 2302 2769 3453 3692 4604 5538 6906 11076 13812 14963 29926 44889 59852 81721 89778 163442 179556 245163 326884 490326 980652 1062373 2124746 3187119 4249492 6374238 12748476