Search a number
-
+
130423445 = 540936373
BaseRepresentation
bin1111100011000…
…01101010010101
3100002102012022222
413301201222111
5231342022240
620535232125
73142403165
oct761415225
9302365288
10130423445
1167691079
1237818645
1321036449
14134705a5
15b6b3eb5
hex7c61a95

130423445 has 8 divisors (see below), whose sum is σ = 156570936. Its totient is φ = 104296896.

The previous prime is 130423399. The next prime is 130423451. The reversal of 130423445 is 544324031.

It can be written as a sum of positive squares in 4 ways, for example, as 25381444 + 105042001 = 5038^2 + 10249^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 130423445 - 224 = 113646229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17279 + ... + 23651.

It is an arithmetic number, because the mean of its divisors is an integer number (19571367).

Almost surely, 2130423445 is an apocalyptic number.

It is an amenable number.

130423445 is a deficient number, since it is larger than the sum of its proper divisors (26147491).

130423445 is an equidigital number, since it uses as much as digits as its factorization.

130423445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10471.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 130423445 is about 11420.3084459221. The cubic root of 130423445 is about 507.1291279570.

Adding to 130423445 its reverse (544324031), we get a palindrome (674747476).

The spelling of 130423445 in words is "one hundred thirty million, four hundred twenty-three thousand, four hundred forty-five".

Divisors: 1 5 4093 6373 20465 31865 26084689 130423445