426081220 has 12 divisors (see below), whose sum is σ = 894770604. Its totient is φ = 170432480.

The previous prime is 426081211. The next prime is 426081221. The reversal of 426081220 is 22180624.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54671236 + 371409984 = 7394^2 + 19272^2 .

It is not an unprimeable number, because it can be changed into a prime (426081221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10652011 + ... + 10652050.

It is an arithmetic number, because the mean of its divisors is an integer number (74564217).

Almost surely, 2^426081220 is an apocalyptic number.

It is an amenable number.

426081220 is an abundant number, since it is smaller than the sum of its proper divisors (468689384).

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

426081220 is a wasteful number, since it uses less digits than its factorization.

426081220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21304070 (or 21304068 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 426081220 is about 20641.7349077058. The cubic root of 426081220 is about 752.4843364914.

The spelling of 426081220 in words is "four hundred twenty-six million, eighty-one thousand, two hundred twenty".