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12950900 = 2252129509
BaseRepresentation
bin110001011001…
…110101110100
3220100222021222
4301121311310
511303412100
61141325512
7215036504
oct61316564
926328258
1012950900
117346226
124406898
1328b5a71
141a11a04
15120c485
hexc59d74

12950900 has 18 divisors (see below), whose sum is σ = 28103670. Its totient is φ = 5180320.

The previous prime is 12950891. The next prime is 12950941. The reversal of 12950900 is 905921.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2427364 + 10523536 = 1558^2 + 3244^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12950900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64655 + ... + 64854.

It is an arithmetic number, because the mean of its divisors is an integer number (1561315).

Almost surely, 212950900 is an apocalyptic number.

12950900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12950900 is an abundant number, since it is smaller than the sum of its proper divisors (15152770).

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

12950900 is a wasteful number, since it uses less digits than its factorization.

12950900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129523 (or 129516 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 12950900 is about 3598.7358891700. The cubic root of 12950900 is about 234.8370682896.

The spelling of 12950900 in words is "twelve million, nine hundred fifty thousand, nine hundred".

Divisors: 1 2 4 5 10 20 25 50 100 129509 259018 518036 647545 1295090 2590180 3237725 6475450 12950900