130223920 has 40 divisors (see below), whose sum is σ = 313216560. Its totient is φ = 50292480.

The previous prime is 130223911. The next prime is 130223923. The reversal of 130223920 is 29322031.

It is a tau number, because it is divible by the number of its divisors (40).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 130223891 and 130223900.

It is not an unprimeable number, because it can be changed into a prime (130223923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25746 + ... + 30385.

It is an arithmetic number, because the mean of its divisors is an integer number (7830414).

Almost surely, 2^130223920 is an apocalyptic number.

130223920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130223920 is an abundant number, since it is smaller than the sum of its proper divisors (182992640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130223920 is a wasteful number, since it uses less digits than its factorization.

130223920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56173 (or 56167 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 130223920 is about 11411.5695677676. The cubic root of 130223920 is about 506.8703897586.

Adding to 130223920 its reverse (29322031), we get a palindrome (159545951).

The spelling of 130223920 in words is "one hundred thirty million, two hundred twenty-three thousand, nine hundred twenty".