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12818872 = 23113137127
BaseRepresentation
bin110000111001…
…100110111000
3220010021012001
4300321212320
511240200442
61134430344
7213646543
oct60714670
926107161
1012818872
117266010
1243623b4
13286a941
1419b985a
1511d32b7
hexc399b8

12818872 has 64 divisors (see below), whose sum is σ = 28016640. Its totient is φ = 5443200.

The previous prime is 12818851. The next prime is 12818879. The reversal of 12818872 is 27881821.

12818872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12818879) 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, 100873 + ... + 100999.

It is an arithmetic number, because the mean of its divisors is an integer number (437760).

Almost surely, 212818872 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 12818872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14008320).

12818872 is an abundant number, since it is smaller than the sum of its proper divisors (15197768).

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

12818872 is a wasteful number, since it uses less digits than its factorization.

12818872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 208 counting only the distinct ones).

The product of its digits is 14336, while the sum is 37.

The square root of 12818872 is about 3580.3452347504. The cubic root of 12818872 is about 234.0363252347.

It can be divided in two parts, 1281 and 8872, that added together give a triangular number (10153 = T142).

The spelling of 12818872 in words is "twelve million, eight hundred eighteen thousand, eight hundred seventy-two".

Divisors: 1 2 4 8 11 22 31 37 44 62 74 88 124 127 148 248 254 296 341 407 508 682 814 1016 1147 1364 1397 1628 2294 2728 2794 3256 3937 4588 4699 5588 7874 9176 9398 11176 12617 15748 18796 25234 31496 37592 43307 50468 51689 86614 100936 103378 145669 173228 206756 291338 346456 413512 582676 1165352 1602359 3204718 6409436 12818872