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12238470 = 23251719421
BaseRepresentation
bin101110101011…
…111010000110
3212000210000200
4232223322012
511113112340
61114151330
7206011446
oct56537206
925023020
1012238470
1169a9a42
124122546
1326c66ca
1418a8126
15111b330
hexbabe86

12238470 has 96 divisors (see below), whose sum is σ = 35549280. Its totient is φ = 2903040.

The previous prime is 12238439. The next prime is 12238477. The reversal of 12238470 is 7483221.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12238477) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28860 + ... + 29280.

It is an arithmetic number, because the mean of its divisors is an integer number (370305).

Almost surely, 212238470 is an apocalyptic number.

12238470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12238470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17774640).

12238470 is an abundant number, since it is smaller than the sum of its proper divisors (23310810).

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

12238470 is a wasteful number, since it uses less digits than its factorization.

12238470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 12238470 is about 3498.3524693775. The cubic root of 12238470 is about 230.4494676408.

The spelling of 12238470 in words is "twelve million, two hundred thirty-eight thousand, four hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 17 18 19 30 34 38 45 51 57 85 90 95 102 114 153 170 171 190 255 285 306 323 342 421 510 570 646 765 842 855 969 1263 1530 1615 1710 1938 2105 2526 2907 3230 3789 4210 4845 5814 6315 7157 7578 7999 9690 12630 14314 14535 15998 18945 21471 23997 29070 35785 37890 39995 42942 47994 64413 71570 71991 79990 107355 119985 128826 135983 143982 214710 239970 271966 322065 359955 407949 644130 679915 719910 815898 1223847 1359830 2039745 2447694 4079490 6119235 12238470