Search a number
-
+
12472238240 = 2557113727361
BaseRepresentation
bin10111001110110011…
…10100000010100000
31012012012201100102122
423213121310002200
5201020343110430
65421335203412
7621034163420
oct134731640240
935165640378
1012472238240
115320287210
122500b16568
131239c49637
14864628480
154cee52ee5
hex2e76740a0

12472238240 has 192 divisors, whose sum is σ = 37730665728. Its totient is φ = 3782246400.

The previous prime is 12472238213. The next prime is 12472238257. The reversal of 12472238240 is 4283227421.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 12472238240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 442160 + ... + 469520.

It is an arithmetic number, because the mean of its divisors is an integer number (196513884).

Almost surely, 212472238240 is an apocalyptic number.

12472238240 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 12472238240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18865332864).

12472238240 is an abundant number, since it is smaller than the sum of its proper divisors (25258427488).

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

12472238240 is a wasteful number, since it uses less digits than its factorization.

12472238240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27431 (or 27423 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The spelling of 12472238240 in words is "twelve billion, four hundred seventy-two million, two hundred thirty-eight thousand, two hundred forty".