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12938464 = 257115989
BaseRepresentation
bin110001010110…
…110011100000
3220100100020101
4301112303200
511303012324
61141152144
7214655320
oct61266340
926310211
1012938464
117337950
1243bb654
1328b01c6
141a0b280
151208944
hexc56ce0

12938464 has 96 divisors (see below), whose sum is σ = 32659200. Its totient is φ = 4899840.

The previous prime is 12938461. The next prime is 12938467. The reversal of 12938464 is 46483921.

It is an interprime number because it is at equal distance from previous prime (12938461) and next prime (12938467).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12938461) 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, 145332 + ... + 145420.

It is an arithmetic number, because the mean of its divisors is an integer number (340200).

Almost surely, 212938464 is an apocalyptic number.

12938464 is a gapful number since it is divisible by the number (14) 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 12938464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16329600).

12938464 is an abundant number, since it is smaller than the sum of its proper divisors (19720736).

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

12938464 is a wasteful number, since it uses less digits than its factorization.

12938464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 168 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 12938464 is about 3597.0076452518. The cubic root of 12938464 is about 234.7618774005.

The spelling of 12938464 in words is "twelve million, nine hundred thirty-eight thousand, four hundred sixty-four".

Divisors: 1 2 4 7 8 11 14 16 22 28 32 44 56 59 77 88 89 112 118 154 176 178 224 236 308 352 356 413 472 616 623 649 712 826 944 979 1232 1246 1298 1424 1652 1888 1958 2464 2492 2596 2848 3304 3916 4543 4984 5192 5251 6608 6853 7832 9086 9968 10384 10502 13216 13706 15664 18172 19936 20768 21004 27412 31328 36344 36757 42008 54824 57761 72688 73514 84016 109648 115522 145376 147028 168032 219296 231044 294056 404327 462088 588112 808654 924176 1176224 1617308 1848352 3234616 6469232 12938464