Search a number
-
+
12953860 = 225647693
BaseRepresentation
bin110001011010…
…100100000100
3220101010100121
4301122210010
511304010420
61141351324
7215051233
oct61324404
926333317
1012953860
117348477
124408544
1328b720a
141a12b1a
15120d2aa
hexc5a904

12953860 has 12 divisors (see below), whose sum is σ = 27203148. Its totient is φ = 5181536.

The previous prime is 12953821. The next prime is 12953869. The reversal of 12953860 is 6835921.

It can be written as a sum of positive squares in 2 ways, for example, as 9449476 + 3504384 = 3074^2 + 1872^2 .

It is not an unprimeable number, because it can be changed into a prime (12953869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323827 + ... + 323866.

It is an arithmetic number, because the mean of its divisors is an integer number (2266929).

Almost surely, 212953860 is an apocalyptic number.

12953860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12953860 is an abundant number, since it is smaller than the sum of its proper divisors (14249288).

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

12953860 is a wasteful number, since it uses less digits than its factorization.

12953860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647702 (or 647700 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 12953860 is about 3599.1471211941. The cubic root of 12953860 is about 234.8549580314.

The spelling of 12953860 in words is "twelve million, nine hundred fifty-three thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 647693 1295386 2590772 3238465 6476930 12953860