426661220 has 24 divisors (see below), whose sum is σ = 896427000. Its totient is φ = 170580992.

The previous prime is 426661181. The next prime is 426661229. The reversal of 426661220 is 22166624.

It can be written as a sum of positive squares in 4 ways, for example, as 4194304 + 422466916 = 2048^2 + 20554^2 .

It is not an unprimeable number, because it can be changed into a prime (426661229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51956 + ... + 59604.

It is an arithmetic number, because the mean of its divisors is an integer number (37351125).

Almost surely, 2^426661220 is an apocalyptic number.

It is an amenable number.

426661220 is an abundant number, since it is smaller than the sum of its proper divisors (469765780).

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

426661220 is a wasteful number, since it uses less digits than its factorization.

426661220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10447 (or 10445 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 426661220 is about 20655.7793365440. The cubic root of 426661220 is about 752.8256196477.

The spelling of 426661220 in words is "four hundred twenty-six million, six hundred sixty-one thousand, two hundred twenty".