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12720246000 = 2435371122503
BaseRepresentation
bin10111101100010111…
…11000110011110000
31012211111101110010020
423312023320303300
5202022340333000
65502115003440
7630135210210
oct136613706360
935744343106
1012720246000
11543827a100
12256bb99580
1312794422a7
14889546240
154e6ae1ba0
hex2f62f8cf0

12720246000 has 480 divisors, whose sum is σ = 51537368064. Its totient is φ = 2642112000.

The previous prime is 12720245987. The next prime is 12720246013. The reversal of 12720246000 is 64202721.

It is an interprime number because it is at equal distance from previous prime (12720245987) and next prime (12720246013).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5080749 + ... + 5083251.

Almost surely, 212720246000 is an apocalyptic number.

12720246000 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 12720246000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25768684032).

12720246000 is an abundant number, since it is smaller than the sum of its proper divisors (38817122064).

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

12720246000 is a wasteful number, since it uses less digits than its factorization.

12720246000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558 (or 2531 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

Adding to 12720246000 its reverse (64202721), we get a palindrome (12784448721).

The spelling of 12720246000 in words is "twelve billion, seven hundred twenty million, two hundred forty-six thousand".