130515028 has 72 divisors (see below), whose sum is σ = 283258080. Its totient is φ = 52315200.

The previous prime is 130514999. The next prime is 130515067. The reversal of 130515028 is 820515031.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 130514993 and 130515011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 375951 + ... + 376297.

It is an arithmetic number, because the mean of its divisors is an integer number (3934140).

Almost surely, 2^130515028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130515028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141629040).

130515028 is an abundant number, since it is smaller than the sum of its proper divisors (152743052).

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

130515028 is a wasteful number, since it uses less digits than its factorization.

130515028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 130515028 is about 11424.3173975516. The cubic root of 130515028 is about 507.2478017637.

The spelling of 130515028 in words is "one hundred thirty million, five hundred fifteen thousand, twenty-eight".