220781126 has 8 divisors (see below), whose sum is σ = 331239144. Its totient is φ = 110368080.

The previous prime is 220781111. The next prime is 220781131. The reversal of 220781126 is 621187022.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6866 + ... + 22106.

It is an arithmetic number, because the mean of its divisors is an integer number (41404893).

Almost surely, 2^220781126 is an apocalyptic number.

220781126 is a deficient number, since it is larger than the sum of its proper divisors (110458018).

220781126 is a wasteful number, since it uses less digits than its factorization.

220781126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22486.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 220781126 is about 14858.7053944817. The cubic root of 220781126 is about 604.3947009352.

The spelling of 220781126 in words is "two hundred twenty million, seven hundred eighty-one thousand, one hundred twenty-six".