130515444 has 18 divisors (see below), whose sum is σ = 329914130. Its totient is φ = 43505136.

The previous prime is 130515439. The next prime is 130515467. The reversal of 130515444 is 444515031.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 116899344 + 13616100 = 10812^2 + 3690^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×130515444² = 34068562245034272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1812679 + ... + 1812750.

Almost surely, 2^130515444 is an apocalyptic number.

It is an amenable number.

130515444 is an abundant number, since it is smaller than the sum of its proper divisors (199398686).

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

130515444 is a wasteful number, since it uses less digits than its factorization.

130515444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3625439 (or 3625434 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 130515444 is about 11424.3356043142. The cubic root of 130515444 is about 507.2483406924.

The spelling of 130515444 in words is "one hundred thirty million, five hundred fifteen thousand, four hundred forty-four".