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12400303200 = 2535217491619
BaseRepresentation
bin10111000110001110…
…11001110001100000
31012000012100200002220
423203013121301200
5200343434200300
65410245311040
7616201560315
oct134307316140
935005320086
1012400303200
11529371436a
1224a0a05480
13122808111c
14858c60d0c
154c8993da0
hex2e31d9c60

12400303200 has 288 divisors, whose sum is σ = 42893504640. Its totient is φ = 3100876800.

The previous prime is 12400303159. The next prime is 12400303219. The reversal of 12400303200 is 230300421.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12400303200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20032491 + ... + 20033109.

It is an arithmetic number, because the mean of its divisors is an integer number (148935780).

Almost surely, 212400303200 is an apocalyptic number.

12400303200 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 12400303200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21446752320).

12400303200 is an abundant number, since it is smaller than the sum of its proper divisors (30493201440).

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

12400303200 is a wasteful number, since it uses less digits than its factorization.

12400303200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 12400303200 its reverse (230300421), we get a palindrome (12630603621).

The spelling of 12400303200 in words is "twelve billion, four hundred million, three hundred three thousand, two hundred".