260221506 has 32 divisors (see below), whose sum is σ = 542203200. Its totient is φ = 83185920.

The previous prime is 260221441. The next prime is 260221519. The reversal of 260221506 is 605122062.

260221506 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 5550 + ... + 23478.

It is an arithmetic number, because the mean of its divisors is an integer number (16943850).

Almost surely, 2^260221506 is an apocalyptic number.

260221506 is an abundant number, since it is smaller than the sum of its proper divisors (281981694).

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

260221506 is a wasteful number, since it uses less digits than its factorization.

260221506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18034.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 260221506 is about 16131.3826437786. The cubic root of 260221506 is about 638.4316301044.

Adding to 260221506 its reverse (605122062), we get a palindrome (865343568).

The spelling of 260221506 in words is "two hundred sixty million, two hundred twenty-one thousand, five hundred six".