Search a number
-
+
12919517184 = 21237243499
BaseRepresentation
bin11000000100001000…
…00011000000000000
31020100101100110210110
430002010003000000
5202424344022214
65533554031320
7635105040600
oct140204030000
936311313713
1012919517184
11552a804532
122606878540
1312ab802932
148a7bb8c00
15509355159
hex302103000

12919517184 has 312 divisors, whose sum is σ = 41086056000. Its totient is φ = 3598221312.

The previous prime is 12919517159. The next prime is 12919517209. The reversal of 12919517184 is 48171591921.

It is an interprime number because it is at equal distance from previous prime (12919517159) and next prime (12919517209).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25890567 + ... + 25891065.

Almost surely, 212919517184 is an apocalyptic number.

12919517184 is a gapful number since it is divisible by the number (14) 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 12919517184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20543028000).

12919517184 is an abundant number, since it is smaller than the sum of its proper divisors (28166538816).

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

12919517184 is an equidigital number, since it uses as much as digits as its factorization.

12919517184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 554 counting only the distinct ones).

The product of its digits is 181440, while the sum is 48.

The spelling of 12919517184 in words is "twelve billion, nine hundred nineteen million, five hundred seventeen thousand, one hundred eighty-four".