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12928248 = 233471281
BaseRepresentation
bin110001010100…
…010011111000
3220022211020000
4301110103320
511302200443
61141033000
7214613454
oct61242370
926284200
1012928248
117330203
1243b5760
1328a8668
141a07664
1512058d3
hexc544f8

12928248 has 80 divisors (see below), whose sum is σ = 36851760. Its totient is φ = 4233600.

The previous prime is 12928247. The next prime is 12928261. The reversal of 12928248 is 84282921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12928247) 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 19 ways as a sum of consecutive naturals, for example, 45868 + ... + 46148.

It is an arithmetic number, because the mean of its divisors is an integer number (460647).

Almost surely, 212928248 is an apocalyptic number.

12928248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12928248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18425880).

12928248 is an abundant number, since it is smaller than the sum of its proper divisors (23923512).

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

12928248 is a wasteful number, since it uses less digits than its factorization.

12928248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 357 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 12928248 is about 3595.5872955610. The cubic root of 12928248 is about 234.7000730822.

The spelling of 12928248 in words is "twelve million, nine hundred twenty-eight thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 71 72 81 108 142 162 213 216 281 284 324 426 562 568 639 648 843 852 1124 1278 1686 1704 1917 2248 2529 2556 3372 3834 5058 5112 5751 6744 7587 7668 10116 11502 15174 15336 19951 20232 22761 23004 30348 39902 45522 46008 59853 60696 79804 91044 119706 159608 179559 182088 239412 359118 478824 538677 718236 1077354 1436472 1616031 2154708 3232062 4309416 6464124 12928248