130028650 has 24 divisors (see below), whose sum is σ = 242222220. Its totient is φ = 51932160.

The previous prime is 130028629. The next prime is 130028659. The reversal of 130028650 is 56820031.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 98545329 + 31483321 = 9927^2 + 5611^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (130028659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39882 + ... + 43018.

Almost surely, 2^130028650 is an apocalyptic number.

130028650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130028650 is a deficient number, since it is larger than the sum of its proper divisors (112193570).

130028650 is a wasteful number, since it uses less digits than its factorization.

130028650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3978 (or 3973 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 130028650 is about 11403.0105673896. The cubic root of 130028650 is about 506.6169133009.

Adding to 130028650 its reverse (56820031), we get a palindrome (186848681).

The spelling of 130028650 in words is "one hundred thirty million, twenty-eight thousand, six hundred fifty".