80730290 has 32 divisors (see below), whose sum is σ = 148599360. Its totient is φ = 31568704.

The previous prime is 80730283. The next prime is 80730301. The reversal of 80730290 is 9203708.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172637 + ... + 173103.

It is an arithmetic number, because the mean of its divisors is an integer number (4643730).

Almost surely, 2^80730290 is an apocalyptic number.

80730290 is a deficient number, since it is larger than the sum of its proper divisors (67869070).

80730290 is a wasteful number, since it uses less digits than its factorization.

80730290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 80730290 is about 8985.0036171389. The cubic root of 80730290 is about 432.1941035885.

Adding to 80730290 its reverse (9203708), we get a palindrome (89933998).

The spelling of 80730290 in words is "eighty million, seven hundred thirty thousand, two hundred ninety".