130728451 has 8 divisors (see below), whose sum is σ = 151083360. Its totient is φ = 110793408.

The previous prime is 130728443. The next prime is 130728497. The reversal of 130728451 is 154827031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 130728451 - 2³ = 130728443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130728421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104296 + ... + 105541.

It is an arithmetic number, because the mean of its divisors is an integer number (18885420).

Almost surely, 2^130728451 is an apocalyptic number.

130728451 is a deficient number, since it is larger than the sum of its proper divisors (20354909).

130728451 is an equidigital number, since it uses as much as digits as its factorization.

130728451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209933.

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

The square root of 130728451 is about 11433.6543152222. The cubic root of 130728451 is about 507.5241413124.

The spelling of 130728451 in words is "one hundred thirty million, seven hundred twenty-eight thousand, four hundred fifty-one".