130415728 has 20 divisors (see below), whose sum is σ = 255881440. Its totient is φ = 64381824.

The previous prime is 130415723. The next prime is 130415731. The reversal of 130415728 is 827514031.

It is a self number, because there is not a number n which added to its sum of digits gives 130415728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130415723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50325 + ... + 52852.

It is an arithmetic number, because the mean of its divisors is an integer number (12794072).

Almost surely, 2^130415728 is an apocalyptic number.

It is an amenable number.

130415728 is a deficient number, since it is larger than the sum of its proper divisors (125465712).

130415728 is a wasteful number, since it uses less digits than its factorization.

130415728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103264 (or 103258 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 130415728 is about 11419.9705778955. The cubic root of 130415728 is about 507.1191256841.

Adding to 130415728 its reverse (827514031), we get a palindrome (957929759).

It can be divided in two parts, 13041 and 5728, that added together give a square (18769 = 137²).

The spelling of 130415728 in words is "one hundred thirty million, four hundred fifteen thousand, seven hundred twenty-eight".