426826660 has 24 divisors (see below), whose sum is σ = 965285496. Its totient is φ = 157597440.

The previous prime is 426826657. The next prime is 426826661. The reversal of 426826660 is 66628624.

It can be written as a sum of positive squares in 4 ways, for example, as 4359744 + 422466916 = 2088^2 + 20554^2 .

It is not an unprimeable number, because it can be changed into a prime (426826661) 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, 820561 + ... + 821080.

It is an arithmetic number, because the mean of its divisors is an integer number (40220229).

Almost surely, 2^426826660 is an apocalyptic number.

It is an amenable number.

426826660 is an abundant number, since it is smaller than the sum of its proper divisors (538458836).

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

426826660 is a wasteful number, since it uses less digits than its factorization.

426826660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641663 (or 1641661 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 426826660 is about 20659.7836387509. The cubic root of 426826660 is about 752.9229110272.

The spelling of 426826660 in words is "four hundred twenty-six million, eight hundred twenty-six thousand, six hundred sixty".