Search a number
-
+
130043449 = 236784389
BaseRepresentation
bin1111100000001…
…00111000111001
3100001200220002001
413300010320321
5231242342244
620523141001
73136231264
oct760047071
9301626061
10130043449
1167451628
1237674761
1320c324b3
14133b1cdb
15b63b5d4
hex7c04e39

130043449 has 8 divisors (see below), whose sum is σ = 137724480. Its totient is φ = 122531376.

The previous prime is 130043423. The next prime is 130043479. The reversal of 130043449 is 944340031.

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 130043449 - 225 = 96489017 is a prime.

It is a super-2 number, since 2×1300434492 = 33822597255631202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130043479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40654 + ... + 43735.

It is an arithmetic number, because the mean of its divisors is an integer number (17215560).

Almost surely, 2130043449 is an apocalyptic number.

It is an amenable number.

130043449 is a deficient number, since it is larger than the sum of its proper divisors (7681031).

130043449 is an equidigital number, since it uses as much as digits as its factorization.

130043449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84479.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 130043449 is about 11403.6594565078. The cubic root of 130043449 is about 506.6361324993.

The spelling of 130043449 in words is "one hundred thirty million, forty-three thousand, four hundred forty-nine".

Divisors: 1 23 67 1541 84389 1940947 5654063 130043449