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12381468 = 2231197967
BaseRepresentation
bin101111001110…
…110100011100
3212022001011220
4233032310130
511132201333
61121213340
7210145401
oct57166434
925261156
1012381468
116a97420
124191250
132746818
1419042a8
1511488b3
hexbced1c

12381468 has 48 divisors (see below), whose sum is σ = 31874304. Its totient is φ = 3709440.

The previous prime is 12381451. The next prime is 12381469. The reversal of 12381468 is 86418321.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12381469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12321 + ... + 13287.

It is an arithmetic number, because the mean of its divisors is an integer number (664048).

Almost surely, 212381468 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 12381468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15937152).

12381468 is an abundant number, since it is smaller than the sum of its proper divisors (19492836).

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

12381468 is a wasteful number, since it uses less digits than its factorization.

12381468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082 (or 1080 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 12381468 is about 3518.7310212632. The cubic root of 12381468 is about 231.3435416066.

Adding to 12381468 its reverse (86418321), we get a palindrome (98799789).

The spelling of 12381468 in words is "twelve million, three hundred eighty-one thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 97 132 194 291 388 582 967 1067 1164 1934 2134 2901 3201 3868 4268 5802 6402 10637 11604 12804 21274 31911 42548 63822 93799 127644 187598 281397 375196 562794 1031789 1125588 2063578 3095367 4127156 6190734 12381468