220779126 has 48 divisors (see below), whose sum is σ = 505190400. Its totient is φ = 69490224.

The previous prime is 220779113. The next prime is 220779133. The reversal of 220779126 is 621977022.

220779126 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124635 + ... + 126393.

It is an arithmetic number, because the mean of its divisors is an integer number (10524800).

Almost surely, 2^220779126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220779126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252595200).

220779126 is an abundant number, since it is smaller than the sum of its proper divisors (284411274).

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

220779126 is a wasteful number, since it uses less digits than its factorization.

220779126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153 (or 2150 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 220779126 is about 14858.6380937150. The cubic root of 220779126 is about 604.3928759105.

The spelling of 220779126 in words is "two hundred twenty million, seven hundred seventy-nine thousand, one hundred twenty-six".