220512290 has 32 divisors (see below), whose sum is σ = 421986240. Its totient is φ = 82728000.

The previous prime is 220512289. The next prime is 220512301. The reversal of 220512290 is 92215022.

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, 13445 + ... + 24935.

It is an arithmetic number, because the mean of its divisors is an integer number (13187070).

Almost surely, 2^220512290 is an apocalyptic number.

220512290 is a deficient number, since it is larger than the sum of its proper divisors (201473950).

220512290 is a wasteful number, since it uses less digits than its factorization.

220512290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11618.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 220512290 is about 14849.6562249771. The cubic root of 220512290 is about 604.1492858628.

The spelling of 220512290 in words is "two hundred twenty million, five hundred twelve thousand, two hundred ninety".