220261506 has 8 divisors (see below), whose sum is σ = 440523024. Its totient is φ = 73420500.

The previous prime is 220261493. The next prime is 220261511. The reversal of 220261506 is 605162022.

220261506 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

220261506 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18355120 + ... + 18355131.

It is an arithmetic number, because the mean of its divisors is an integer number (55065378).

Almost surely, 2^220261506 is an apocalyptic number.

220261506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

220261506 is a wasteful number, since it uses less digits than its factorization.

220261506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36710256.

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

The square root of 220261506 is about 14841.2097215827. The cubic root of 220261506 is about 603.9201702164.

It can be divided in two parts, 22026 and 1506, that added together give a palindrome (23532).

The spelling of 220261506 in words is "two hundred twenty million, two hundred sixty-one thousand, five hundred six".