130428661 has 4 divisors (see below), whose sum is σ = 142285824. Its totient is φ = 118571500.

The previous prime is 130428659. The next prime is 130428671. The reversal of 130428661 is 166824031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 130428661 - 2¹ = 130428659 is a prime.

It is a super-2 number, since 2×130428661² = 34023271220505842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130428611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5928565 + ... + 5928586.

It is an arithmetic number, because the mean of its divisors is an integer number (35571456).

Almost surely, 2^130428661 is an apocalyptic number.

130428661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130428661 is a deficient number, since it is larger than the sum of its proper divisors (11857163).

130428661 is a wasteful number, since it uses less digits than its factorization.

130428661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11857162.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 130428661 is about 11420.5368087494. The cubic root of 130428661 is about 507.1358883731.

The spelling of 130428661 in words is "one hundred thirty million, four hundred twenty-eight thousand, six hundred sixty-one".