130920290 has 16 divisors (see below), whose sum is σ = 236856312. Its totient is φ = 52101504.

The previous prime is 130920289. The next prime is 130920323. The reversal of 130920290 is 92029031.

It can be written as a sum of positive squares in 4 ways, for example, as 119093569 + 11826721 = 10913^2 + 3439^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 31259 + ... + 35198.

Almost surely, 2^130920290 is an apocalyptic number.

130920290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130920290 is a deficient number, since it is larger than the sum of its proper divisors (105936022).

130920290 is a wasteful number, since it uses less digits than its factorization.

130920290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66661.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 130920290 is about 11442.0404648821. The cubic root of 130920290 is about 507.7722773948.

The spelling of 130920290 in words is "one hundred thirty million, nine hundred twenty thousand, two hundred ninety".