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12973100 = 2252743431
BaseRepresentation
bin110001011111…
…010000101100
3220102002202012
4301133100230
511310114400
61142020352
7215161310
oct61372054
926362665
1012973100
117360978
1244176b8
1328c2bba
141a19b40
151213d35
hexc5f42c

12973100 has 72 divisors (see below), whose sum is σ = 32997888. Its totient is φ = 4334400.

The previous prime is 12973099. The next prime is 12973109. The reversal of 12973100 is 137921.

12973100 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×129731002 = 336602647220000, which contains 22 as substring.

12973100 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (12973109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29885 + ... + 30315.

It is an arithmetic number, because the mean of its divisors is an integer number (458304).

Almost surely, 212973100 is an apocalyptic number.

12973100 is a gapful number since it is divisible by the number (10) 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 12973100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16498944).

12973100 is an abundant number, since it is smaller than the sum of its proper divisors (20024788).

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

12973100 is a wasteful number, since it uses less digits than its factorization.

12973100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 12973100 is about 3601.8189849019. The cubic root of 12973100 is about 234.9711749766.

The spelling of 12973100 in words is "twelve million, nine hundred seventy-three thousand, one hundred".

Divisors: 1 2 4 5 7 10 14 20 25 28 35 43 50 70 86 100 140 172 175 215 301 350 430 431 602 700 860 862 1075 1204 1505 1724 2150 2155 3010 3017 4300 4310 6020 6034 7525 8620 10775 12068 15050 15085 18533 21550 30100 30170 37066 43100 60340 74132 75425 92665 129731 150850 185330 259462 301700 370660 463325 518924 648655 926650 1297310 1853300 2594620 3243275 6486550 12973100