130240028 has 12 divisors (see below), whose sum is σ = 228943680. Its totient is φ = 64827552.

The previous prime is 130239983. The next prime is 130240039. The reversal of 130240028 is 820042031.

It is a junction number, because it is equal to n+sod(n) for n = 130239991 and 130240009.

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, 72113 + ... + 73896.

It is an arithmetic number, because the mean of its divisors is an integer number (19078640).

Almost surely, 2^130240028 is an apocalyptic number.

It is an amenable number.

130240028 is a deficient number, since it is larger than the sum of its proper divisors (98703652).

130240028 is a wasteful number, since it uses less digits than its factorization.

130240028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146236 (or 146234 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 130240028 is about 11412.2753208990. The cubic root of 130240028 is about 506.8912879459.

Adding to 130240028 its reverse (820042031), we get a palindrome (950282059).

The spelling of 130240028 in words is "one hundred thirty million, two hundred forty thousand, twenty-eight".