130518224 has 20 divisors (see below), whose sum is σ = 257652036. Its totient is φ = 64027392.

The previous prime is 130518217. The next prime is 130518259. The reversal of 130518224 is 422815031.

It can be written as a sum of positive squares in 2 ways, for example, as 44622400 + 85895824 = 6680^2 + 9268^2 .

It is a super-2 number, since 2×130518224² = 34070013592228352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 130518193 and 130518202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76109 + ... + 77804.

Almost surely, 2^130518224 is an apocalyptic number.

It is an amenable number.

130518224 is a deficient number, since it is larger than the sum of its proper divisors (127133812).

130518224 is a wasteful number, since it uses less digits than its factorization.

130518224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153974 (or 153968 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 130518224 is about 11424.4572737614. The cubic root of 130518224 is about 507.2519421573.

The spelling of 130518224 in words is "one hundred thirty million, five hundred eighteen thousand, two hundred twenty-four".