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13012000 = 25533253
BaseRepresentation
bin110001101000…
…110000100000
3220111002002221
4301220300200
511312341000
61142520424
7215412601
oct61506040
926432087
1013012000
117388121
124436114
132907811
141a29da8
15122061a
hexc68c20

13012000 has 48 divisors (see below), whose sum is σ = 31980312. Its totient is φ = 5203200.

The previous prime is 13011967. The next prime is 13012001. The reversal of 13012000 is 21031.

It can be written as a sum of positive squares in 4 ways, for example, as 8363664 + 4648336 = 2892^2 + 2156^2 .

It is not an unprimeable number, because it can be changed into a prime (13012001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2374 + ... + 5626.

Almost surely, 213012000 is an apocalyptic number.

13012000 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 13012000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15990156).

13012000 is an abundant number, since it is smaller than the sum of its proper divisors (18968312).

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

13012000 is an equidigital number, since it uses as much as digits as its factorization.

13012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278 (or 3260 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 13012000 is about 3607.2149922066. The cubic root of 13012000 is about 235.2057952820.

Adding to 13012000 its reverse (21031), we get a palindrome (13033031).

The spelling of 13012000 in words is "thirteen million, twelve thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 125 160 200 250 400 500 800 1000 2000 3253 4000 6506 13012 16265 26024 32530 52048 65060 81325 104096 130120 162650 260240 325300 406625 520480 650600 813250 1301200 1626500 2602400 3253000 6506000 13012000